英语学习词典
  

occur

Try Other Sites  百度 Dict.cn Hjenglish  Cambridge M-W OneLook Google





occur [ ə'kə:] vi.发生;出现,存在

occur to 被想到

occur to 被想到,被想起

occur to
被想到,被想起

occur [ə'kə:] vi. 发生, 出现

occur [ə'kə:] 发生

Additional social stresses may also occur because of the population explosion or problems arising from mass migration movements-themselves made relatively easy nowadays by modern means of transport.
由于人口的猛增或大量人口流动(现代交通工具使这种流动相对容易)引发的种种问题也会对社会造成新的压力。

What we anticipate seldom occurs; what we lest expected generally happens.
我们所预料的事很少发生,最预料不到的事却往往出现。

There will come a time when a crisis will occur.
危机必将会出现。

The story is a contemporary one; it occurs in the second half of the twentieth century.
这是一个发生在当代的故事--故事发生在20世纪下半叶。

From those sounds which we hear on small or on coarse occasions, we do not easily receive strong impressions, or delightful images; and words to which we are nearly strangers, whenever they occur, draw that attention on themselves which they should transmit to things.
我们在小场合或是粗鲁的场合听到的声音,不容易有强烈的印象或是令人愉悦的形象。对于那些生词,无论什么时候出现,我们要把注意力放到传达意义上。

Temporary shortages do occur, but Simon and other boomsters argue that as long as government doesn’t interfere—by mandating (指令) conservation or setting price controls —people will find alternative.
当代短缺确实出现,但西蒙和其他兴旺论者认为只要政府不干预——通过消费指令或者价格控制——人们总能找到替代品。

Social change is more likely to occur in societies where there is a mixture of different kinds of people than in societies where people are similar in many ways.
社会变化在有多种人群汇集的社会里比仅有相似人群的社会里更容易发生。

这场旱灾是百年不遇的。
This draught occurs once in a blue moon.

Let difficulties occur but not the loss of courage.
纵使困难重重,也不丧失勇气。

Miracles sometimes occur, but one has to work terribly for them.
C. Weizmann. Irish president
奇迹有时候是会发生的,但是你得为之拼命的努力。
爱尔兰总统魏茨曼.C.

Human felicity is produced not so much by great pieces of good fortune that seldom happen, as by little advantages that occur every day.
Benjamin Franklin, American president
与其说人类的幸福来自偶尔发生的鸿运,不如说来自每天都有的小实惠。
美国总统富兰克林.B.

Miracles sometimes occur, but one has to work terribly for them. ( C. Weizmann )
奇迹有时候是会发生的,但是你得为之拼命蒂努力。(魏茨曼)

occur vi. 发生,想到,存在

occur vi. 发生,想到,存在

occur to 被想到,被想起

Claims occur frequently in international trade.
国际贸易中经常发生索赔现象。

If something occurs commonly at a certain time, you can say Usually . . . / Usually . . . e.g.: Usually there’s a match at the Worker’s Stadium / Usually there’s a match at the Worker’s Stadium; Usually on Sundays / Usually on Sundays.
如果某事通常在某个时间发生,你可以说Usually . . . / 通常 . . . 例如: Usually there’s a match at the Worker’s Stadium / 通常在工人体育馆有比赛; Usually on Sundays / 通常是周六。

层见迭出 [céng jiàn dié chū] /to occur frequently/to occur repeatedly/

出 [chū] /to go out/to come out/to occur/to produce/to go beyond/to rise/to put forth/to occur/to happen/(a measure word for dramas, plays, or operas)/

发生 [fā shēng] /to happen/to occur/to take place/

The official statistics are mildly discouraging.
官方的统计数字却有点不让人乐观。
They show that, if you lump manufacturing and services together, productivity has grown on average by 1.2% since 1987.
这些数据表明,如果把制造业和服务业合起来算,1987年以来生产力平均增长1.2%。
That is somewhat faster than the average during the previous decade.
这比前10年的平均增长速度略快。
And since 1991, productivity has increased by about 2% a year, which is more than twice the 1978-1987 average.
自1991年来,生产力每年约增长2%。这比1978年—1987年的平均增长速度高两倍以上。
The trouble is that part of the recent acceleration is due to the usual rebound that occurs at this point in a business cycle, and so is not conclusive evidence of a revival in the underlying trend.
问题在于,近年发生的生产力快速增长部分是由于商业周期通常到了这时候就会出现的反弹造成的,因而它不是经济复苏已经是潜在趋势的结论性证据。

That experiences influence subsequent behaviour is evidence of an obvious but nevertheless remarkable activity called remembering.
Learning could not occur without the function popularly named memory.
过去的经历会影响日后的行为,这就表明存在着一种明显但却非凡的脑力活动——记忆。
如果没有大家称之为记忆的功能,学习便不能发生。

{adj: acrogenic, acrogenous} pertaining to flowerless plants (ferns or mosses) in which growth occurs only at the tip of the main stem

{adj: aphotic} lacking light; especially not reached by sunlight
"the aphotic depths of the sea where no photosynthesis occurs"

{adj: apogean} relating to or characteristic of an apogee
"apogean tides occur when the moon is at the apogee of its orbit"

{adj: at hand, close at hand, imminent, impendent, impending} close in time; about to occur
"retribution is at hand"
"some people believe the day of judgment is close at hand"
"in imminent danger"
"his impending retirement"

{adj: basic} pertaining to or constituting a base or basis
"a basic fact"
"the basic ingredients"
"basic changes in public opinion occur because of changes in priorities"
<-> incidental

{adj: casual, occasional} occuring from time to time
"casual employment"
"a casual correspondence with a former teacher"
"an occasional worker"

{adj: certain, sure} certain to occur; destined or inevitable
"he was certain to fail"
"his fate is certain"
"In this life nothing is certain but death and taxes"- Benjamin Franklin
"he faced certain death"
"sudden but sure regret"
"he is sure to win"
<-> uncertain

{adj: contingent} possible but not certain to occur
"they had to plan for contingent expenses"

{adj: ecdemic} of or relating to a disease that originates outside the locality in which it occurs
<-> endemic, epidemic

{adj: enzootic} of a disease that is constantly present in an animal community but only occurs in a small number of cases

{adj: familial, genetic, hereditary, inherited, transmitted, transmissible} tending to occur among members of a family usually by heredity
"an inherited disease"
"familial traits"
"genetically transmitted features"

{adj: harmonic, sympathetic} relating to vibrations that occur as a result of vibrations in a nearby body
"sympathetic vibration"

{adj: improbable, unlikely} not likely to be true or to occur or to have occurred
"legislation on the question is highly unlikely"
"an improbable event"
<-> probable

{adj: interpersonal} occurring among or involving several people
"interpersonal situations in which speech occurs"

{adj: intrapulmonary} being or occuring within a lung

{adj: prescient} perceiving the significance of events before they occur
"extraordinarily prescient memoranda on the probable course of postwar relations"-R.H.Rovere

{adj: proactive} descriptive of any event or stimulus or process that has an effect on events or stimuli or processes that occur subsequently
"proactive inhibition"
"proactive interference"
<-> retroactive

{adj: septic} of or relating to or caused by putrefaction
"the septic action occurs at the bottom of the septic tank"

{adj: synsemantic} of a word or phrase meaningful only when it occurs in the company of other words

{adj: uncertain} not certain to occur; not inevitable
"everything is uncertain about the army"
"the issue is uncertain"
<-> certain

{adv: medially} in a medial position
"this consonant always occurs medially"

{adv: paradoxically} in a paradoxical manner
"paradoxically, ice ages seem to occur when the sun gets hotter"

{adv: predicatively} occuring within the predicate phrase
"predicatively used adjectives"

{adv: spontaneously} in a spontaneous manner
"this shift occurs spontaneously"

{n: El Nino southern oscillation} a more intense El Nino that occurs every few years when the welling up of cold nutrient-rich water does not occur; kills plankton and fish and affects weather patterns

{n: Francisella, genus Francisella} a genus of Gram-negative aerobic bacteria that occur as pathogens and parasite in many animals (including humans)

{n: Friedreich's ataxia, herediatry spinal ataxia} sclerosis of the posterior and lateral columns of the spinal cord; characterized by muscular weakness and abnormal gait; occurs in children

{n: Hand-Schuller-Christian disease, Schuller-Christian disease} inflammatory histiocytosis associated with disturbance of cholesterol metabolism; occurs chiefly in young children and is characterized by cystic defects of the skull and diabetes insipidus

{n: Jacquemier's sign} a purplish discoloration of the mucous membrane of the vagina that occurs early in pregnancy

{n: Latin square} a square matrix of n rows and columns; cells contain n different symbols so arranged that no symbol occurs more than once in any row or column

{n: Leboyer method of childbirth, Leboyer method} a method of childbirth that tries to minimize the trauma for the newborn; delivery occurs in a quiet dimly lit room and the infant's head is not pulled and immediate bonding between mother and child is encouraged

{n: Pacinian corpuscle} a specialized bulblike nerve ending located in the subcutaneous tissue of the skin; occurs abundantly in the skin of palms and soles and joints and genitals

{n: Rhizobium, genus Rhizobium} the type genus of Rhizobiaceae; usually occur in the root nodules of legumes; can fix atmospheric oxygen

{n: Tay-Sachs disease, Tay-Sachs, Sachs disease, infantile amaurotic idiocy} a hereditary disorder of lipid metabolism occuring most frequently in individuals of Jewish descent in eastern Europe; accumulation of lipids in nervous tissue results in death in early childhood

{n: Werdnig-Hoffman disease} autosomal recessive disease in which the degeneration of spinal nerve cells and brain nerve cells leads to atrophy of skeletal muscles and flaccid paralysis; death usually occurs in early childhood

{n: acrocyanosis, Raynaud's sign} cyanosis of the extremities; can occur when a spasm of the blood vessels is caused by exposure to cold or by strong emotion

{n: acrogen} any flowerless plant such as a fern (pteridophyte) or moss (bryophyte) in which growth occurs only at the tip of the main stem

{n: activation energy, energy of activation} the energy that an atomic system must acquire before a process (such as an emission or reaction) can occur
"catalysts are said to reduce the energy of activation during the transition phase of a reaction"

{n: active site} the part of an enzyme or antibody where the chemical reaction occurs

{n: adenosine triphosphate, ATP} a nucleotide derived from adenosine that occurs in muscle tissue; the major source of energy for cellular reactions

{n: ader wax, earth wax, mineral wax, ozokerite, ozocerite} a waxy mineral that is a mixture of hydrocarbons and occurs in association with petroleum; some varieties are used in making ceresin and candles

{n: adiabatic process} (thermodynamics) any process that occurs without gain or loss of heat

{n: adult respiratory distress syndrome, ARDS, wet lung, white lung} acute lung injury characterized by coughing and rales; inflammation of the lungs which become stiff and fibrous and cannot exchange oxygen; occurs among persons exposed to irritants such as corrosive chemical vapors or ammonia or chlorine etc.

{n: agglutination test} a blood test used to identify unknown antigens; blood with the unknown antigen is mixed with a known antibody and whether or not agglutination occurs helps to identify the antigen; used in tissue matching and blood grouping and diagnosis of infections

{n: alanine} a crystalline amino acid that occurs in many proteins

{n: allomorph} any of several different crystalline forms of the same chemical compound
"calcium carbonate occurs in the allomorphs calcite and aragonite"

{n: alpha rhythm, alpha wave} the normal brainwave in the electroencephalogram of a person who is awake but relaxed; occurs with a frequency of 8-12 hertz

{n: aluminum hydroxide, aluminium hydroxide, hydrated aluminum oxide, hydrated aluminium oxide} white crystalline compound that occurs naturally as the mineral gibbsite

{n: alveolar rhabdomyosarcoma, alveolar rhabdosarcoma} form of rhabdomyosarcoma occuring mainly in adolescents and young adults

{n: alveolitis, dry socket} inflammation in the socket of a tooth; sometimes occurs after a tooth is extracted and a blood clot fails to form

{n: amyl} a hydrocarbon radical that occurs in many organic compounds

{n: anamorphism} metamorphism that occurs deep under the earth's surface; changes simple minerals into complex minerals
<-> katamorphism

{n: angiosarcoma} a rare malignant neoplasm arising from vascular tissue; usually occurs in the breast and skin and is believed to originate from the endothelial cells of blood vessels

{n: aspiration pneumonia} inflammation of the lungs caused by inhaling or choking on vomitus; may occur during unconsciousness (anesthesia or drunkenness or seizure or cardiac arrest)

{n: asynchronism, asynchrony, desynchronization, desynchronisation, desynchronizing} the relation that exists when things occur at unrelated times
"the stimulus produced a desynchronizing of the brain waves"
<-> synchronism, synchronization, synchronizing

{n: asynchronous operation} operations that occur without a regular or predictable time relation to other events
<-> synchronous operation

{n: automatism} any reaction that occurs automatically without conscious thought or reflection (especially the undirected behavior seen in psychomotor epilepsy)

{n: basal body temperature method of family planning, basal body temperature method} natural family planning in which the fertile period of the woman's menstrual cycle is inferred by noting the rise in basal body temperature that typically occurs with ovulation

{n: beta rhythm, beta wave} the normal brainwave in the encephalogram of a person who is awake and alert; occurs with a frequency between 12 and 30 hertz

{n: betaine} a sweet tasting alkaloid that occurs in sugar beets

{n: biochemistry} the organic chemistry of compounds and processes occuring in organisms; the effort to understand biology within the context of chemistry

{n: black mangrove, Avicennia marina} a mangrove of the West Indies and the southern Florida coast; occurs in dense thickets and has numerous short roots that bend up from the ground

{n: blastula, blastodermic vesicle} early stage of an embryo produced by cleavage of an ovum; a liquid-filled sphere whose wall is composed of a single layer of cells; during this stage (about eight days after fertilization) implantation in the wall of the uterus occurs

{n: blood extravasation} the leakage of blood from a vessel into tissues surrounding it; can occur in injuries or burns or allergic reactions

{n: boron, B, atomic number 5} a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder

{n: bound morpheme, bound form} a morpheme that occurs only as part of a larger construction; eg an -s at the end of plural nouns

{n: breach of warranty} a breach that occurs when an item is deficient according to the terms of a warranty

{n: bush vetch, Vicia sepium} European purple-flowered with slender stems; occurs as a weed in hedges

{n: butane} occurs in natural gas; used in the manufacture of rubber and fuels

{n: cadenza} a brilliant solo passage occuring near the end of a piece of music

{n: cadmium, Cd, atomic number 48} a soft bluish-white ductile malleable toxic bivalent metallic element; occurs in association with zinc ores

{n: candelilla wax} a hard brown wax that occurs as a coating on candelilla shrubs

{n: carbon, C, atomic number 6} an abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous carbon and graphite and diamond; occurs in all organic compounds

{n: change, alteration, modification} an event that occurs when something passes from one state or phase to another
"the change was intended to increase sales"
"this storm is certainly a change for the worse"
"the neighborhood had undergone few modifications since his last visit years ago"

{n: chemical element, element} any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter

{n: chlorine, Cl, atomic number 17} a common nonmetallic element belonging to the halogens; best known as a heavy yellow irritating toxic gas; used to purify water and as a bleaching agent and disinfectant; occurs naturally only as a salt (as in sea water)

{n: chlorite} a generally green or black mineral; it occurs as a constituent of many rocks typically in the form of a flat crystal

{n: citrulline} an amino acid that does not occur in proteins but is an intermediate in the conversion of ornithine to arginine

{n: classical conditioning} conditioning that pairs a neutral stimulus with a stimulus that evokes a reflex; the stimulus that evokes the reflex is given whether or not the conditioned response occurs until eventually the neutral stimulus comes to evoke the reflex

{n: coelenterate, cnidarian} radially symmetrical animals having saclike bodies with only one opening and tentacles with stinging structures; they occur in polyp and medusa forms

{n: complication} any disease or disorder that occurs during the course of (or because of) another disease
"bed sores are a common complication in cases of paralysis"

{n: conditional probability, contingent probability} the probability that an event will occur given that one or more other events have occurred

{n: copper, Cu, atomic number 29} a ductile malleable reddish-brown corrosion-resistant diamagnetic metallic element; occurs in various minerals but is the only metal that occurs abundantly in large masses; used as an electrical and thermal conductor

{n: coupling, mating, pairing, conjugation, union, sexual union} the act of pairing a male and female for reproductive purposes
"the casual couplings of adolescents"
"the mating of some species occurs only in the spring"

{n: creatine, creatin} an amino acid that does not occur in proteins but is found in the muscle tissue of vertebrates both in the free form and as phosphocreatine; supplies energy for muscle contraction

{n: cryogenics, cryogeny} the branch of physics that studies the phenomena that occur at very low temperatures

{n: cutin} (biochemistry) a waxy transparent material that occurs in the cuticle of plants and consists of highly polymerized esters of fatty acids

{n: cyanobacteria, blue-green algae} predominantly photosynthetic prokaryotic organisms containing a blue pigment in addition to chlorophyll; occur singly or in colonies in diverse habitats; important as phytoplankton

{n: cycle, rhythm, round} an interval during which a recurring sequence of events occurs
"the never-ending cycle of the seasons"

{n: cyclic neutropenia} neutropenia that occurs periodically

{n: cymene} any of three isotopes of a colorless aromatic liquid hydrocarbon occuring in the volatile oil of cumin and thyme and used in the manufacture of synthetic resins

{n: cystocele, colpocystocele} hernia in which the urinary bladder protrudes through the wall of the vagina; sometimes occurs after childbirth

{n: daily variation} fluctuations that occur between one day and the next

{n: darnel, tare, bearded darnel, cheat, Lolium temulentum} weedy annual grass often occurs in grainfields and other cultivated land; seeds sometimes considered poisonous

{n: decalescence} phenomenon that occurs when a metal is being heated and there is a sudden slowing in the rate of temperature increase; slowing is caused by a change in the internal crystal structure of the metal

{n: deictic, deictic word} a word specifying identity or spacial or temporal location from the perspective of a speaker or hearer in the context in which the communication occurs
"words that introduce particulars of the speaker's and hearer's shared cognitive field into the message"- R.Rommetveit

{n: deixis} the function of pointing or specifying from the perspective of a participant in an act of speech or writing; aspects of a communication whose interpretation depends on knowledge of the context in which the communication occurs

{n: delta rhythm, delta wave} the normal brainwave in the encephalogram of a person in deep dreamless sleep; occurs with high voltage and low frequency (1 to 4 hertz)

{n: dioxin} any of several toxic or carcinogenic hydrocarbons that occur as impurities in herbicides

{n: diurnal variation} fluctuations that occur during each day

{n: dog, domestic dog, Canis familiaris} a member of the genus Canis (probably descended from the common wolf) that has been domesticated by man since prehistoric times; occurs in many breeds
"the dog barked all night"

{n: dramatic irony} (theater) irony that occurs when the meaning of the situation is understood by the audience but not by the characters in the play

{n: durbar} the room in the palace of a native prince of India in which audiences and receptions occur

{n: eburnation} a change that occurs in degenerative joint disease in which bone is converted into a dense smooth substance resembling ivory

{n: electrolytic cell} a cell containing an electrolyte in which an applied voltage causes a reaction to occur that would not occur otherwise (such as the breakdown of water into hydrogen and oxygen)
<-> voltaic cell

{n: endometrium} (pregnancy) the mucous membrane that lines the uterus; thickens under hormonal control and (if pregnancy does not occur) is shed in menstruation; if pregnancy occurs it is shed along with the placenta at parturition

{n: enkephalin} an endorphin having opiate qualities that occurs in the brain and spinal cord and elsewhere

{n: enteric bacteria, enterobacteria, enterics, entric} rod-shaped Gram-negative bacteria; most occur normally or pathogenically in intestines of humans and other animals

{n: enterobiasis} an infestation with or a resulting infection caused by the pinworm Enterobius vermicularis; occurs especially in children

{n: epicanthus, epicanthic fold} a vertical fold of skin over the nasal canthus; normal for Mongolian peoples; sometimes occurs in Down's syndrome

{n: erbium, Er, atomic number 68} a trivalent metallic element of the rare earth group; occurs with yttrium

{n: erythroblastosis fetalis} severe anemia in newborn babies; the result of Rh incompatibility between maternal and fetal blood; typically occurs when the child of an Rh-negative mother inherits Rh-positive blood from the father; can be diagnosed before birth by amniocentesis

{n: esprit de l'escalier} a witty remark that occurs to you too late

{n: estradiol, oestradiol} the most powerful female hormone that occurs naturally; synthesized and used to treat estrogen deficiency and breast cancer

{n: exposition} (music) the section of a movement (especially in sonata form) where the major musical themes first occur

{n: external gill} occurs in some mollusks and in tadpoles and other immature amphibians

{n: external-combustion engine} a heat engine in which ignition occurs outside the chamber (cylinder or turbine) in which heat is converted to mechanical energy

{n: eye contact} contact that occurs when two people look directly at each other
"a teacher should make eye contact with the students"

{n: facilitation} (neurophysiology) phenomenon that occurs when two or more neural impulses that alone are not enough to trigger a response in a neuron combine to trigger an action potential

{n: false alarm} a warning that is given about something that fails to occur

{n: fascioliasis, fasciolosis} infestation with the liver fluke Fasciola hepatica; liver damage sometimes occurs; related to liver rot

{n: favus} a contagious fungal infection of the scalp; occurs mainly in Africa and the Middle East

{n: femtochemistry} the branch of chemistry that studies elementary (often very fast) chemical reactions as they occur; the experimental methods are often based on the use of femtosecond laser pulses

{n: festination} involuntary shortening of stride and quickening of gait that occurs in some diseases (e.g., Parkinson's disease)

{n: fetoprotein, foetoprotein} any of several antigens that occur naturally in the fetus and sometimes in adults with cancer

{n: fieldstone} stone that occurs naturally in fields; often used as building material

{n: finger grass} any grass of the genus Chloris; occurs in short grassland especially on waste ground or poor soils

{n: first person} pronouns and verbs used to refer to the speaker or writer of the language in which they occur

{n: florida selaginella, Selaginella eatonii} occurs widely in Florida

{n: footfault} a fault that occurs when the server in tennis fails to keep both feet behind the baseline

{n: foretaste} an early limited awareness of something yet to occur

{n: foryml} (chemistry) the negative univalent acyl radical CHO that occurs in aldehydes

{n: free morpheme, free form} a morpheme that can occur alone

{n: gallium, Ga, atomic number 31} a rare silvery (usually trivalent) metallic element; brittle at low temperatures but liquid above room temperature; occurs in trace amounts in bauxite and zinc ores

{n: geophagy, geophagia, pica} eating earth or clay or chalk; occurs in some primitive tribes or sometimes in cases of nutritional deficiency

{n: germanium, Ge, atomic number 32} a brittle grey crystalline element that is a semiconducting metalloid (resembling silicon) used in transistors; occurs in germanite and argyrodite

{n: glyceride, acylglycerol} an ester of glycerol and fatty acids that occurs naturally as fats and fatty oils
"fresh fats contain glycerides of fatty acids and very little free acid"

{n: gold, Au, atomic number 79} a soft yellow malleable ductile (trivalent and univalent) metallic element; occurs mainly as nuggets in rocks and alluvial deposits; does not react with most chemicals but is attacked by chlorine and aqua regia

{n: granular pearlite, globular pearlite} if steel or iron cool very slowly the cementite may occur in globules instead of in layers

{n: grey birch, gray birch, American grey birch, American gray birch, Betula populifolia} medium-sized birch of eastern North America having white or pale grey bark and valueless wood; occurs often as a second-growth forest tree

{n: gromwell, Lithospermum officinale} European perennial branching plant; occurs in hedgerows and at the edge of woodlands

{n: ground swell} an obvious change of public opinion or political sentiment that occurs without leadership or overt expression
"there was a ground swell of antiwar sentiment"

{n: habitat, home ground} the type of environment in which an organism or group normally lives or occurs
"a marine habitat"
"he felt safe on his home grounds"

{n: helium, He, atomic number 2} a very light colorless element that is one of the six inert gasses; the most difficult gas to liquefy; occurs in economically extractable amounts in certain natural gases (as those found in Texas and Kansas)

{n: hematite, haematite} the principal form of iron ore; consists of ferric oxide in crystalline form; occurs in a red earthy form

{n: hemophilia A, haemophilia A, classical hemophilia, classical haemophilia} hemophilia caused by a congenital deficiency of factor VIII; occurs almost exclusively in men

{n: hepatic coma} coma that can occur in severe cases of liver disease

{n: herniated disc, ruptured intervertebral disc, slipped disc} a painful rupture of the fibrocartilage of the disc between spinal vertebrae; occurs most often in the lumbar region

{n: holmium, Ho, atomic number 67} a trivalent metallic element of the rare earth group; occurs together with yttrium; forms highly magnetic compounds

{n: hyaline, hyalin} a glassy translucent material that occurs in hyaline cartilage or in certain skin conditions

{n: hyperpnea} energetic (deep and rapid) respiration that occurs normally after exercise or abnormally with fever or various disorders
<-> hypopnea

{n: indium, In, atomic number 49} a rare soft silvery metallic element; occurs in small quantities in sphalerite

{n: instrumental conditioning} operant conditioning that pairs a response with a reinforcement in discrete trials; reinforcement occurs only after the response is given

{n: internal-combustion engine, ICE} a heat engine in which combustion occurs inside the engine rather than in a separate furnace; heat expands a gas that either moves a piston or turns a gas turbine

{n: iodine, iodin, I, atomic number 53} a nonmetallic element belonging to the halogens; used especially in medicine and photography and in dyes; occurs naturally only in combination in small quantities (as in sea water or rocks)

{n: iridium, Ir, atomic number 77} a heavy brittle metallic element of the platinum group; used in alloys; occurs in natural alloys with platinum or osmium

{n: irony} a trope that involves incongruity between what is expected and what occurs

{n: irony} incongruity between what might be expected and what actually occurs
"the irony of Ireland's copying the nation she most hated"

{n: isoantibody, alloantibody} an antibody that occurs naturally against foreign tissues from a person of the same species

{n: isochrone} an isogram connecting points at which something occurs or arrives at the same time

{n: itaconic acid} a crystalline carboxylic acid; occurs in some fermentations of sugars

{n: juncture, occasion} an event that occurs at a critical time
"at such junctures he always had an impulse to leave"
"it was needed only on special occasions"

{n: katamorphism} metamorphism that occurs at or near the earth's surface; breaks down complex minerals into simpler ones
<-> anamorphism

{n: keratin, ceratin} a fibrous scleroprotein that occurs in the outer layer of the skin and in horny tissues such as hair feathers nails and hooves

{n: ketoacidosis, diabetic acidosis} acidosis with an accumulation of ketone bodies; occurs primarily in diabetes mellitus

{n: krypton, Kr, atomic number 36} a colorless element that is one of the six inert gasses; occurs in trace amounts in air

{n: kyanite, cyanite} a grey or greenish-blue mineral consisting of aluminum silicate in crystalline form; occurs in metaphoric rock, used as a refractory

{n: lactose, milk sugar} a sugar comprising one glucose molecule linked to a galactose molecule; occurs only in milk
"cow's milk contains about 4.7% lactose"

{n: lactosuria} presence of lactose in the urine; can occur during pregnancy or lactation

{n: lamellar mixture} a mixture in which substances occur in distinct layers

{n: lanthanum, La, atomic number 57} a white soft metallic element that tarnishes readily; occurs in rare earth minerals and is usually classified as a rare earth

{n: leiomyosarcoma} sarcoma of smooth muscle; occurs most often digestive tract or uterus or bladder or prostate

{n: lichen} any thallophytic plant of the division Lichenes; occur as crusty patches or bushy growths on tree trunks or rocks or bare ground etc.

{n: life} the course of existence of an individual; the actions and events that occur in living
"he hoped for a new life in Australia"
"he wanted to live his own life without interference from others"

{n: lightening} descent of the uterus into the pelvic cavity that occurs late in pregnancy; the fetus is said to have dropped

{n: limekiln} a kiln used to reduce naturally occuring forms of calcium carbonate to lime

{n: linolenic acid} a liquid polyunsaturated fatty acid that occurs in some plant oils; an essential fatty acid

{n: lithium, Li, atomic number 3} a soft silver-white univalent element of the alkali metal group; the lightest metal known; occurs in several minerals

{n: luminescence} light not due to incandescence; occurs at low temperatures

{n: lutetium, lutecium, Lu, atomic number 71} a trivalent metallic element of the rare earth group; usually occurs in association with yttrium

{n: lysine} an essential amino acid found in proteins; occurs especially in gelatin and casein

{n: magnesium carbonate} a very white crystalline salt that occurs naturally as magnesite or as dolomite

{n: magnesium, Mg, atomic number 12} a light silver-white ductile bivalent metallic element; in pure form it burns with brilliant white flame; occurs naturally only in combination (as in magnesite and dolomite and carnallite and spinel and olivine)

{n: manganese, Mn, atomic number 25} a hard brittle grey polyvalent metallic element that resembles iron but is not magnetic; used in making steel; occurs in many minerals

{n: meal} any of the occasions for eating food that occur by custom or habit at more or less fixed times

{n: measles, rubeola, morbilli} an acute and highly contagious viral disease marked by distinct red spots followed by a rash; occurs primarily in children

{n: mechanism, chemical mechanism} the atomic process that occurs during a chemical reaction
"he determined unique mechanisms for the photochemical reactions"

{n: menorrhea, menstrual blood, menstrual flow} flow of blood from the uterus; occurs at roughly monthly intervals during a woman's reproductive years

{n: menstrual cycle} a recurring cycle (beginning at menarche and ending at menopause) in which the endometrial lining of the uterus prepares for pregnancy; if pregnancy does not occur the lining is shed at menstruation
"the average menstrual cycle is 28 days"

{n: menthol} a crystalline compound that has the cool and minty taste and odor that occurs naturally in peppermint oil; used as a flavoring and in medicine to relieve itching, pain, and nasal congestion

{n: metallic bond} a chemical bond in which electrons are shared over many nuclei and electronic conduction occurs

{n: metamorphosis, metabolism} the marked and rapid transformation of a larva into an adult that occurs in some animals

{n: migraine, megrim, sick headache, hemicrania} a severe recurring vascular headache; occurs more frequently in women than men

{n: misfire, dud} an explosion that fails to occur

{n: motion sickness, kinetosis} the state of being dizzy or nauseated because of the motions that occur while traveling in or on a moving vehicle

{n: mucopolysaccharide} complex polysaccharides containing an amino group; occur chiefly as components of connective tissue

{n: muton} the smallest unit of DNA where a mutation can occur

{n: mydriasis} reflex pupillary dilation as a muscle pulls the iris outward; occurs in response to a decrease in light or certain drugs

{n: myeloblast} a precursor of leukocytes that normally occurs only in bone marrow

{n: natural immunity, innate immunity} immunity to disease that occurs as part of an individual's natural biologic makeup

{n: neodymium, Nd, atomic number 60} a yellow trivalent metallic element of the rare earth group; occurs in monazite and bastnasite in association with cerium and lanthanum and praseodymium

{n: neon, Ne, atomic number 10} a colorless odorless gaseous element that give a red glow in a vacuum tube; one of the six inert gasses; occurs in the air in small amounts

{n: neurochemical} any organic substance that occurs in neural activity

{n: nickel, Ni, atomic number 28} a hard malleable ductile silvery metallic element that is resistant to corrosion; used in alloys; occurs in pentlandite and smaltite and garnierite and millerite

{n: nicotine} an alkaloid poison that occurs in tobacco; used in medicine and as an insecticide

{n: niobium, Nb, atomic number 41} a soft grey ductile metallic element used in alloys; occurs in niobite; formerly called columbium

{n: nondevelopment} failure of normal development to occur
<-> development

{n: nonlinear distortion, amplitude distortion} distortion that occurs when the output signal does not have a linear relation to the input signal

{n: one-off} a happening that occurs only once and is not repeated

{n: opportunistic infection} any infection caused by a microorganism that does not normally cause disease in humans; occurs in persons with abnormally functioning immune systems (as AIDS patients or transplant patients receiving immunosuppressive drugs)

{n: ornithine} an amino acid that does not occur in proteins but is important in the formation of urea

{n: orpiment} a yellow mineral occuring in conjunction with realgar; an ore of arsenic

{n: orthochorea} a form of chorea in which spasms occur mainly when the patient is erect

{n: orthodox sleep, nonrapid eye movement sleep, NREM sleep, nonrapid eye movement, NREM} a recurring sleep state during which rapid eye movements do not occur and dreaming does not occur; accounts for about 75% of normal sleep time

{n: osteoblastoma} benign tumor of bone and fibrous tissue; occurs in the vertebrae or femur or tibia or arm bones (especially in young adults)

{n: osteochondroma} benign tumor containing both bone and cartilage; usually occurs near the end of a long bone

{n: overflow incontinence} urinary incontinence that occurs when the bladder is so full that it continually leaks urine; often attributable to a blocked urethra (e.g., due to prostate enlargement) or weak bladder muscles or nerve damage

{n: oxidation, oxidization, oxidisation} the process of oxidizing; the addition of oxygen to a compound with a loss of electrons; always occurs accompanied by reduction

{n: ozone sickness} illness that can occur to persons exposed to ozone in high-altitude aircraft; characterized by sleepiness and headache and chest pains and itchiness

{n: palladium, Pd, atomic number 46} a silver-white metallic element of the platinum group that resembles platinum; occurs in some copper and nickel ores; does not tarnish at ordinary temperatures and is used (alloyed with gold) in jewelry

{n: pantothenic acid, pantothen} a vitamin of the vitamin B complex that performs an important role in the oxidation of fats and carbohydrates and certain amino acids; occurs in many foods

{n: paradoxical sleep, rapid eye movement sleep, REM sleep, rapid eye movement, REM} a recurring sleep state during which dreaming occurs; a state of rapidly shifting eye movements during sleep

{n: pectic acid} a complex acid that occurs in ripe fruit and some vegetables

{n: pectin} any of various water-soluble colloidal carbohydrates that occur in ripe fruit and vegetables; used in making fruit jellies and jams

{n: periclase, magnesia, magnesium oxide} a white solid mineral that occurs naturally as periclase; a source of magnesium

{n: phase, form} (physical chemistry) a distinct state of matter in a system; matter that is identical in chemical composition and physical state and separated from other material by the phase boundary
"the reaction occurs in the liquid phase of the system"

{n: phosphorus, P, atomic number 15} a multivalent nonmetallic element of the nitrogen family that occurs commonly in inorganic phosphate rocks and as organic phosphates in all living cells; is highly reactive and occurs in several allotropic forms

{n: plasminogen} an inactive form of plasmin that occurs in plasma and is converted to plasmin by organic solvents

{n: platinum, Pt, atomic number 78} a heavy precious metallic element; grey-white and resistant to corroding; occurs in some nickel and copper ores and is also found native in some deposits

{n: playing field} the circumstances under which competition occurs
"the government's objective is to insure a genuinely level playing field for American industry and commerce in Europe"

{n: polonium, Po, atomic number 84} a radioactive metallic element that is similar to tellurium and bismuth; occurs in uranium ores but can be produced by bombarding bismuth with neutrons in a nuclear reactor

{n: precognition, foreknowledge} knowledge of an event before it occurs

{n: premenstrual syndrome, PMS} a syndrome that occurs in many women from 2 to 14 days before the onset of menstruation

{n: prepuberty} a period of two years immediately prior to the onset of puberty when growth and changes leading to sexual maturity occur

{n: prevailing westerly, westerly} the winds from the west that occur in the temperate zones of the Earth

{n: probability, chance} a measure of how likely it is that some event will occur; a number expressing the ratio of favorable cases to the whole number of cases possible
"the probability that an unbiased coin will fall with the head up is 0.5"

{n: prodrome, prodroma} an early symptom that a disease is developing or that an attack is about to occur

{n: program, programme} an announcement of the events that will occur as part of a theatrical or sporting event
"you can't tell the players without a program"

{n: progressive vaccinia, vaccinia gangrenosa} a severe or even fatal form of vaccinia that occurs mainly in persons with an immunological deficiency; characterized by progressive enlargement of the initial lesion

{n: psoriasis} a chronic skin disease characterized by dry red patches covered with scales; occurs especially on the scalp and ears and genitalia and the skin over bony prominences

{n: psychoanalytic process} a process that is assumed to occur in psychoanalytic theory

{n: quantum theory} (physics) a physical theory that certain properties occur only in discrete amounts (quanta)

{n: radium, Ra, atomic number 88} an intensely radioactive metallic element that occurs in minute amounts in uranium ores

{n: radon, Rn, atomic number 86} a radioactive gaseous element formed by the disintegration of radium; the heaviest of the inert gasses; occurs naturally (especially in areas over granite) and is considered a hazard to health

{n: raffinose} a trisaccharide that occurs in sugar beets and cotton seeds and certain cereals

{n: real time} (computer science) the time it takes for a process under computer control to occur

{n: real time} the actual time that it takes a process to occur
"information is updated in real time"

{n: receptiveness, receptivity, openness} willingness or readiness to receive (especially impressions or ideas)
"he was testing the government's receptiveness to reform"
"this receptiveness is the key feature in oestral behavior, enabling natural mating to occur"
"their receptivity to the proposal"

{n: rectocele, proctocele} protrusion or herniation of the rectum into the vagina; can occur if pelvic muscles are weakened by childbirth

{n: reduction, reducing} any process in which electrons are added to an atom or ion (as by removing oxygen or adding hydrogen); always occurs accompanied by oxidation of the reducing agent

{n: rennin, chymosin} an enzyme that occurs in gastric juice; causes milk to coagulate

{n: retinoblastoma} malignant ocular tumor of retinal cells; usually occurs before the third year of life; composed of primitive small round retinal cells

{n: retrial} a new trial in which issues already litigated and to which the court has already rendered a verdict or decision are reexamined by the same court; occurs when the initial trial is found to have been improper or unfair due to procedural errors

{n: rhythm method of birth control, rhythm method, rhythm, calendar method of birth control, calendar method} natural family planning in which ovulation is assumed to occur 14 days before the onset of a period (the fertile period would be assumed to extend from day 10 through day 18 of her cycle)

{n: rubidium, Rb, atomic number 37} a soft silvery metallic element of the alkali metal group; burns in air and reacts violently in water; occurs in carnallite and lepidolite and pollucite

{n: rutile} a mineral consisting of titanium dioxide in crystalline form; occurs in metamorphic and plutonic rocks and is a major source of titanium

{n: sabbatia} any of various plants of the genus Sabbatia having usually pink cymose flowers; occur from acid bogs to brackish marshes

{n: safe period} that time during a woman's menstrual cycle during which conception is least likely to occur (usually immediately before of after menstruation)

{n: samarium, Sm, atomic number 62} a grey lustrous metallic element of the rare earth group; is used in special alloys; occurs in monazite and bastnasite

{n: samarskite} a complex black mineral occuring in pegmatites

{n: sapphirine} a rare light blue or green mineral; consists of aluminum and magnesium silicate and occurs as small grains in some metamorphic rocks

{n: scaler} an electronic pulse counter used to count pulses that occur too rapidly to be recorded individually

{n: scandium, Sc, atomic number 21} a white trivalent metallic element; sometimes classified in the rare earth group; occurs in the Scandinavian mineral thortveitite

{n: scene} the place where some action occurs
"the police returned to the scene of the crime"

{n: schedule} an ordered list of times at which things are planned to occur

{n: schwa, shwa} a neutral middle vowel; occurs in unstressed syllables

{n: screen saver} (computer science) a moving design that appears on a computer screen when there has been no input for a specified period of time
"screen savers prevent the damage that occurs when the same areas of light and dark are displayed too long"

{n: second person} pronouns and verbs used to refer to the person addressed by the language in which they occur

{n: secretory phase, luteal phase} the second half of the menstrual cycle after ovulation; the corpus luteum secretes progesterone which prepares the endometrium for the implantation of an embryo; if fertilization does not occur then menstrual flow begins

{n: selenium, Se, atomic number 34} a toxic nonmetallic element related to sulfur and tellurium; occurs in several allotropic forms; a stable grey metallike allotrope conducts electricity better in the light than in the dark and is used in photocells; occurs in sulfide ores (as pyrite)

{n: separation} the space where a division or parting occurs
"he hid in the separation between walls"

{n: sexual intercourse, intercourse, sex act, copulation, coitus, coition, sexual congress, congress, sexual relation, relation, carnal knowledge} the act of sexual procreation between a man and a woman; the man's penis is inserted into the woman's vagina and excited until orgasm and ejaculation occur

{n: siderosis} fibrosis of the lung caused by iron dust; occurs among welders and other metal workers

{n: silica, silicon oxide, silicon dioxide} a white or colorless vitreous insoluble solid (SiO2); various forms occur widely in the earth's crust as quartz or cristobalite or tridymite or lechartelierite

{n: silicon, Si, atomic number 14} a tetravalent nonmetallic element; next to oxygen it is the most abundant element in the earth's crust; occurs in clay and feldspar and granite and quartz and sand; used as a semiconductor in transistors

{n: silver, Ag, atomic number 47} a soft white precious univalent metallic element having the highest electrical and thermal conductivity of any metal; occurs in argentite and in free form; used in coins and jewelry and tableware and photography

{n: slam dunk} something that is a sure to occur; a foregone conclusion
"predicting his success was a slam dunk"

{n: sleep apnea} apnea that occurs during sleep

{n: sleep terror disorder, pavor nocturnus} a disorder of sleep characterized by a dream of terrifying dimensions far worse than a typical nightmare; they occur during NREM sleep

{n: sodalite} a vitreous mineral consisting of sodium aluminum silicate and sodium chloride in crystalline form; occurs in igneous rocks

{n: sodium, Na, atomic number 11} a silvery soft waxy metallic element of the alkali metal group; occurs abundantly in natural compounds (especially in salt water); burns with a yellow flame and reacts violently in water; occurs in sea water and in the mineral halite (rock salt)

{n: spinel} a hard glassy mineral consisting of an oxide of magnesium and aluminum; occurs in various colors that are used as gemstones

{n: sponge, poriferan, parazoan} primitive multicellular marine animal whose porous body is supported by a fibrous skeletal framework; usually occurs in sessile colonies

{n: spree killer} a serial killer whose murders occur within a brief period of time

{n: sprue, tropical sprue} a chronic disorder that occurs in tropical and non-tropical forms and in both children and adults; nutrients are not absorbed; symptoms include foul-smelling diarrhea and emaciation

{n: stay} a judicial order forbidding some action until an event occurs or the order is lifted
"the Supreme Court has the power to stay an injunction pending an appeal to the whole Court"

{n: stearic acid, octadecanoic acid} a waxy saturated fatty acid; occurs widely as a glyceride in animal and vegetable fats

{n: stress incontinence} urinary incontinence that occurs when involuntary pressure is put on the bladder by coughing or laughing or sneezing or lifting or straining

{n: strontium, Sr, atomic number 38} a soft silver-white or yellowish metallic element of the alkali metal group; turns yellow in air; occurs in celestite and strontianite

{n: subacute sclerosing panencephalitis, SSPE, inclusion body encephalitis, subacute inclusion body encephalitis, sclerosing leukoencephalitis, subacute sclerosing leukoencephalitis, Bosin's disease, Dawson's encephalitis, Van Bogaert encephalitis} a rare chronic progressive encephalitis caused by the measles virus and occurring primarily in children and young adults; death usually occurs within three years; characterized by primary measles infection before the age of two years

{n: subordinating conjunction} the subordination that occurs when a conjunction makes one linguistic unit a constituent of another

{n: sulfur dioxide, sulphur dioxide} a colorless toxic gas (SO2) that occurs in the gases from volcanoes; used in many manufacturing processes and present in industrial emissions; causes acid rain

{n: sulfur, S, sulphur, atomic number 16} an abundant tasteless odorless multivalent nonmetallic element; best known in yellow crystals; occurs in many sulphide and sulphate minerals and even in native form (especially in volcanic regions)

{n: superinfection} infection that occurs while you are being treated for another infection

{n: synchronism, synchrony, synchronicity, synchroneity, synchronization, synchronisation, synchronizing} the relation that exists when things occur at the same time
"the drug produces an increased synchrony of the brain waves"
<-> asynchronism, desynchronization, desynchronizing

{n: synchronization, synchronisation, synchronizing, synchronising} an adjustment that causes something to occur or recur in unison

{n: synesthesia, synaesthesia} a sensation that normally occurs in one sense modality occurs when another modality is stimulated

{n: tantalite} a mineral consisting of tantalum oxide of iron and manganese that occurs with niobite or in coarse granite; an ore of tantalum

{n: tantalum, Ta, atomic number 73} a hard grey lustrous metallic element that is highly resistant to corrosion; occurs in niobite and fergusonite and tantalite

{n: tardive dyskinesia} involuntary rolling of the tongue and twitching of the face or trunk or limbs; often occurs in patients with Parkinsonism who are treated with phenothiazine

{n: technetium, Tc, atomic number 43} a crystalline metallic element not found in nature; occurs as one of the fission products of uranium

{n: tellurium, Te, atomic number 52} a brittle silver-white metalloid element that is related to selenium and sulfur; it is used in alloys and as a semiconductor; occurs mainly as tellurides in ores of copper and nickel and silver and gold

{n: tentacle} any of various elongated tactile or prehensile flexible organs that occur on the head or near the mouth in many animals; used for feeling or grasping or locomotion

{n: terbium, Tb, atomic number 65} a metallic element of the rare earth group; used in lasers; occurs in apatite and monazite and xenotime and ytterbite

{n: term} one of the substantive phrases in a logical proposition
"the major term of a syllogism must occur twice"

{n: test-tube baby} a baby conceived by fertilization that occurs outside the mother's body; the woman's ova are removed and mixed with sperm in a culture medium - if fertilization occurs the blastocyte is implanted in the woman's uterus

{n: tetanus, lockjaw} an acute and serious infection of the central nervous system caused by bacterial infection of open wounds; spasms of the jaw and laryngeal muscles may occur during the late stages

{n: thallium, Tl, atomic number 81} a soft grey malleable metallic element that resembles tin but discolors on exposure to air; it is highly toxic and is used in rodent and insect poisons; occurs in zinc blende and some iron ores

{n: theta rhythm, theta wave} the normal brainwave in the encephalogram of a person who is awake but relaxed and drowsy; occurs with low frequency and low amplitude

{n: third person} pronouns and verbs that are used to refer to something other than the speaker or addressee of the language in which they occur

{n: thorium, Th, atomic number 90} a soft silvery-white tetravalent radioactive metallic element; isotope 232 is used as a power source in nuclear reactors; occurs in thorite and in monazite sands

{n: threonine} a colorless crystalline amino acid found in protein; occurs in the hydrolysates of certain proteins; an essential component of human nutrition

{n: thulium, Tm, atomic number 69} a soft silvery metallic element of the rare earth group; isotope 170 emits X-rays and is used in small portable X-ray machines; it occurs in monazite and apatite and xenotime

{n: time frame} a time period during which something occurs or is expected to occur
"an agreement can be reached in a reasonably short time frame"

{n: tin, Sn, atomic number 50} a silvery malleable metallic element that resists corrosion; used in many alloys and to coat other metals to prevent corrosion; obtained chiefly from cassiterite where it occurs as tin oxide

{n: topaz} a mineral (fluosilicate of aluminum) that occurs in crystals of various colors and is used as a gemstone

{n: tourmaline} a mineral that is a complex borosilicate and hydroxide of aluminum containing iron and magnesium and calcium and lithium and sodium; it is usually black but occurs in transparent colored forms that are used as gemstones

{n: toxic shock, toxic shock syndrome, TSS} syndrome resulting from a serious acute (sometimes fatal) infection associated with the presence of staphylococcus; characterized by fever and diarrhea and nausea and diffuse erythema and shock; occurs especially in menstruating women using highly absorbent tampons

{n: trace element} an element that occurs at very small quantities in the body but is nonetheless important for many biological processes

{n: tradeoff, trade-off} an exchange that occurs as a compromise
"I faced a tradeoff between eating and buying my medicine"

{n: triolein, olein} a naturally occuring glyceride of oleic acid that is found in fats and oils

{n: tryptophan, tryptophane} an amino acid that occurs in proteins; is essential for growth and normal metabolism; a precursor of niacin

{n: unipolar depression} a major depressive episode that occurs without the manic phase that occurs in the classic form of bipolar disorder

{n: uranium, U, atomic number 92} a heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons

{n: vanadium, V, atomic number 23} a soft silvery white toxic metallic element used in steel alloys; it occurs in several complex minerals including carnotite and vanadinite

{n: vector-borne transmission} indirect transmission of an infectious agent that occurs when a vector bites or touches a person

{n: vehicle-borne transmission} indirect transmission of an infectious agent that occurs when a vehicle (or fomite) touches a person's body or is ingested

{n: vesuvianite, vesuvian, idocrase} a green or yellow or brown mineral consisting of a hydrated silicate; it occurs as crystals in limestone and is used a gemstone

{n: vitamin A1, retinol} an unsaturated alcohol that occurs in marine fish-liver oils and is synthesized biologically from carotene

{n: water, H2O} binary compound that occurs at room temperature as a clear colorless odorless tasteless liquid; freezes into ice below 0 degrees centigrade and boils above 100 degrees centigrade; widely used as a solvent

{n: whiteout} an arctic atmospheric condition with clouds over snow produce a uniform whiteness and objects are difficult to see; occurs when the light reflected off the snow equals the light coming through the clouds

{n: windfall profit} profit that occurs unexpectedly as a consequence of some event not controlled by those who profit from it

{n: winter mushroom, Flammulina velutipes} an edible agaric that is available in early spring or late fall when few other mushrooms are; has a viscid smooth orange to brown cap and a velvety stalk that turns black in maturity and pallid gills; often occur in clusters

{n: wish list} a list of events that you wish would occur

{n: writing} (usually plural) the collected work of an author
"the idea occurs with increasing frequency in Hemingway's writings"

{n: xanthelasma} xanthoma of the eyelids; occurs chiefly in the elderly

{n: xanthopsia} visual defect in which objects appear to have a yellowish hue; sometimes occurs in cases of jaundice

{n: ytterbium, Yb, atomic number 70} a soft silvery metallic element; a rare earth of the lanthanide series; it occurs in gadolinite and monazite and xenotime

{n: zeaxanthin} yellow carotenoid (isomeric with lutein and occurs widely with it) that is the main pigment in yellow Indian corn

{n: zinc, Zn, atomic number 30} a bluish-white lustrous metallic element; brittle at ordinary temperatures but malleable when heated; used in a wide variety of alloys and in galvanizing iron; it occurs as zinc sulphide in zinc blende

{n: zirconium, Zr, atomic number 40} a lustrous grey strong metallic element resembling titanium; it is used in nuclear reactors as a neutron absorber; it occurs in baddeleyite but is obtained chiefly from zircon

{v: anticipate} be a forerunner of or occur earlier than
"This composition anticipates Impressionism"

{v: arise, come up} occur
"A slight unpleasantness arose from this discussion"

{v: be} happen, occur, take place
"I lost my wallet ; this was during the visit to my parents' house"


The results are stopped at 500th line.
372 paragraphs, 500 lines displayed.    Top
(Alt+Z : Reinput words.)
(You can doubleclick on the English words you are searching for.)