| acetamide | (noun) a colorless solid amide of acetic acid used as a solvent and in the synthesis of organic compounds | Synonyms: ethanamide |
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| acetaminophen | (noun) an analgesic for mild pain but not for inflammation; also used as an antipyretic; (Datril, Tylenol, Panadol, Phenaphen, Tempra, and Anacin III are trademarks of brands of acetaminophen tablets) | Synonyms: Anacin III, Datril, Panadol, Phenaphen, Tempra, Tylenol |
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| acrylamide | (noun) a white crystalline amide of propenoic acid can damage the nervous system and is carcinogenic in laboratory animals | - |
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| adynamia | (noun) lack of strength or vigor (especially from illness) | - |
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| adynamic | (adjective) characterized by an absence of force or forcefulness | Synonyms: undynamic |
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| (adjective) lacking energy or vitality | Synonyms: asthenic, debilitated, enervated |
| aerodynamic | (adjective) of or relating to aerodynamics | - |
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| (adjective) designed or arranged to offer the least resistance to fluid flow | Synonyms: flowing, sleek, streamlined |
| aerodynamics | (noun) the branch of mechanics that deals with the motion of gases (especially air) and their effects on bodies in the flow | Synonyms: aeromechanics |
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| agamic | (adjective) (of reproduction) not involving the fusion of male and female gametes in reproduction | Synonyms: agamogenetic, agamous, apomictic, parthenogenetic |
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| agamid | (noun) a lizard of the family Agamidae | Synonyms: agamid lizard |
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| amiability | (noun) a disposition to be friendly and approachable (easy to talk to) | Synonyms: affability, affableness, amiableness, bonhomie, geniality |
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| (noun) a cheerful and agreeable mood | Synonyms: good humor, good humour, good temper |
| amiable | (adjective) diffusing warmth and friendliness | Synonyms: affable, cordial, genial |
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| (adjective) disposed to please | Synonyms: good-humored, good-humoured |
| amiableness | (noun) a disposition to be friendly and approachable (easy to talk to) | Synonyms: affability, affableness, amiability, bonhomie, geniality |
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| amiably | (adverb) in an affable manner | Synonyms: affably, genially |
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| amicability | (noun) having a disposition characterized by warmth and friendliness | Synonyms: amicableness |
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| (noun) a disinclination to quarrel | Synonyms: amicableness |
| amicable | (adjective) characterized by friendship and good will | - |
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| amicableness | (noun) having a disposition characterized by warmth and friendliness | Synonyms: amicability |
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| (noun) a disinclination to quarrel | Synonyms: amicability |
| amicably | (adverb) in an amicable manner | - |
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| amide | (noun) any organic compound containing the group -CONH2 | - |
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| amidopyrine | (noun) a white crystalline substance used as an analgesic and antipyretic | Synonyms: aminopyrine |
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| amidship | (adjective) located in the middle part of a ship or aircraft | - |
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| (adverb) at or near or toward the center of a ship | Synonyms: amidships, midships |
| (adverb) at or near or toward the middle | - |
| amidships | (adverb) at or near or toward the center of a ship | Synonyms: amidship, midships |
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| amigo | (noun) a friend or comrade | - |
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| amine | (noun) a compound derived from ammonia by replacing hydrogen atoms by univalent hydrocarbon radicals | Synonyms: aminoalkane |
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| aminic | (adjective) pertaining to or containing any of a group of organic compounds of nitrogen derived from ammonia | Synonyms: amino |
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| amino | (adjective) pertaining to or containing any of a group of organic compounds of nitrogen derived from ammonia | Synonyms: aminic |
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| (noun) the radical -NH2 | Synonyms: amino group |
| aminoaciduria | (noun) abnormal presence of amino acids in the urine; usually a symptom of metabolic defects | - |
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| aminoalkane | (noun) a compound derived from ammonia by replacing hydrogen atoms by univalent hydrocarbon radicals | Synonyms: amine |
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| aminobenzine | (noun) oily poisonous liquid amine obtained from nitrobenzene and used to make dyes and plastics and medicines | Synonyms: aniline, aniline oil, phenylamine |
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| aminomethane | (noun) a methyl with the hydrogen atom replaced by an amino radical | - |
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| aminopherase | (noun) a class of transferases that catalyze transamination (that transfer an amino group from an amino acid to another compound) | Synonyms: aminotransferase, transaminase |
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| aminophylline | (noun) a theophylline derivative that is used as a bronchodilator in the treatment of bronchial asthma, emphysema, and bronchitis | - |
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| aminoplast | (noun) a plastic (synthetic resin) made from amino compounds; used as an adhesive and as a coating for paper and textiles | Synonyms: amino plastic, amino resin |
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| aminopyrine | (noun) a white crystalline substance used as an analgesic and antipyretic | Synonyms: amidopyrine |
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| aminotransferase | (noun) a class of transferases that catalyze transamination (that transfer an amino group from an amino acid to another compound) | Synonyms: aminopherase, transaminase |
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| amiodarone | (noun) an antiarrhythmic drug (trade name Cordarone) that has potentially fatal side effects and is used to control serious heart rhythm problems only when safer agents have been ineffective | Synonyms: Cordarone |
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| amir | (noun) an independent ruler or chieftain (especially in Africa or Arabia) | Synonyms: ameer, emeer, emir |
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| amiss | (adjective) not functioning properly | Synonyms: awry, haywire, wrong |
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| (adverb) away from the correct or expected course | Synonyms: awry |
| (adverb) in an improper or mistaken or unfortunate manner | - |
| (adverb) in an imperfect or faulty way | Synonyms: imperfectly |
| amitosis | (noun) the direct method of cell division characterized by simple division of the nucleus without formation of chromosomes | - |
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| amitotic | (adjective) pertaining to a simple method of cell division | - |
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| amitriptyline | (noun) a tricyclic antidepressant drug (trade name Elavil) with serious side effects; interacts with many other medications | Synonyms: amitriptyline hydrochloride, Elavil |
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| amity | (noun) a cordial disposition | Synonyms: cordiality |
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| (noun) a state of friendship and cordiality | - |
| amphetamine | (noun) a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression | Synonyms: pep pill, speed, upper |
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| anisogamic | (adjective) relating to a type of sexual reproduction in which the gametes are dissimilar in some respect (as size or shape) | Synonyms: anisogamous |
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| antihistamine | (noun) a medicine used to treat allergies and hypersensitive reactions and colds; works by counteracting the effects of histamine on a receptor site | - |
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| apogamic | (adjective) of or relating to the development of an embryo in the absence of fertilization | Synonyms: apogametic, apogamous |
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| astrodynamics | (noun) the branch of astronomy that studies the motion of natural and artificial bodies in space | - |
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| autogamic | (adjective) characterized by or fit for autogamy | Synonyms: autogamous |
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| avitaminosis | (noun) any of several diseases caused by deficiency of one or more vitamins | Synonyms: hypovitaminosis |
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| avitaminotic | (adjective) of or relating to or characteristic of avitaminosis | - |
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| balsamic | (adjective) of or relating to or containing balsam | Synonyms: balsamy |
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| beaming | (adjective) radiating or as if radiating light | Synonyms: beamy, effulgent, radiant, refulgent |
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| (adjective) cheerful and bright | Synonyms: glad |
| (adjective) pleased and proud | - |
| beamish | (adjective) smiling with happiness or optimism | Synonyms: smiling, twinkly |
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| bedlamite | (noun) an archaic term for a lunatic | - |
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| benjamin | (noun) gum resin used especially in treating skin irritation | Synonyms: asa dulcis, benzoin, gum benjamin, gum benzoin |
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| bigamist | (noun) someone who marries one person while already legally married to another | - |
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| biodynamics | (noun) the branch of biology dealing with energy or the activity of living organisms. | - |
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| calamine | (noun) a white mineral; a common ore of zinc | Synonyms: hemimorphite |
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| calamint | (noun) perennial aromatic herbs growing in hedgerows or scrub or open woodlands from western Europe to central Asia and in North America | - |
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| calamitous | (adjective) (of events) having extremely unfortunate or dire consequences; bringing ruin | Synonyms: black, disastrous, fatal, fateful |
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| calamity | (noun) an event resulting in great loss and misfortune | Synonyms: cataclysm, catastrophe, disaster, tragedy |
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| camion | (noun) a low heavy horse cart without sides; used for haulage | Synonyms: dray |
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| (noun) a large truck designed to carry heavy loads; usually without sides | Synonyms: lorry |
| camise | (noun) a loose shirt or tunic; originally worn in the Middle Ages | - |
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| camisole | (noun) a short negligee | - |
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| (noun) a short sleeveless undergarment for women | Synonyms: underbodice |
| carbamide | (noun) the chief solid component of mammalian urine; synthesized from ammonia and carbon dioxide and used as fertilizer and in animal feed and in plastics | Synonyms: urea |
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| catamite | (noun) a boy who submits to a sexual relationship with a man | - |
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| catecholamine | (noun) any of a group of chemicals including epinephrine and norepinephrine that are produced in the medulla of the adrenal gland | - |
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| ceramic | (adjective) of or relating to or made from a ceramic | - |
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| (noun) an artifact made of hard brittle material produced from nonmetallic minerals by firing at high temperatures | - |
| ceramicist | (noun) a craftsman who shapes pottery on a potter's wheel and bakes them in a kiln | Synonyms: ceramist, potter, thrower |
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| ceramics | (noun) the art of making and decorating pottery | - |
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| ceramist | (noun) a craftsman who shapes pottery on a potter's wheel and bakes them in a kiln | Synonyms: ceramicist, potter, thrower |
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| ceratozamia | (noun) a small cycad of the genus Ceratozamia having a short scaly woody trunk and fernlike foliage and woody cones; Mexico | - |
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| chloramine | (noun) any of several compounds containing chlorine and nitrogen; used as an antiseptic in wounds | Synonyms: chloramine-T |
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| cleistogamic | (adjective) exhibiting or relating to cleistogamy | Synonyms: cleistogamous |
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| clomipramine | (noun) a tricyclic antidepressant drug | - |
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| coaming | (noun) a raised framework around a hatchway on a ship to keep water out | - |
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| cobalamin | (noun) a B vitamin that is used to treat pernicious anemia | Synonyms: antipernicious anemia factor, cyanocobalamin, vitamin B12 |
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| cockamamie | (adjective) informal term for ridiculous and implausible | Synonyms: cockamamy |
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| contaminant | (noun) a substance that contaminates | Synonyms: contamination |
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| contaminate | (verb) make impure | Synonyms: foul, pollute |
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| (verb) make radioactive by adding radioactive material | - |
| contaminated | (adjective) corrupted by contact or association | - |
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| (adjective) rendered unwholesome by contaminants and pollution | Synonyms: polluted |
| contaminating | (adjective) spreading pollution or contamination; especially radioactive contamination | Synonyms: dirty |
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| (adjective) that infects or taints | Synonyms: corrupting |
| contamination | (noun) the act of contaminating or polluting; including (either intentionally or accidentally) unwanted substances or factors | Synonyms: pollution |
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| (noun) the state of being contaminated | Synonyms: taint |
| (noun) a substance that contaminates | Synonyms: contaminant |
| contaminative | (adjective) making impure by contact or mixing | - |
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| creaminess | (noun) the property of having the thickness of heavy cream | Synonyms: soupiness |
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| cryptogamic | (adjective) of or relating to a cryptogam | Synonyms: cryptogamous |
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| cyanamid | (noun) a weak soluble dibasic acid (the parent acid of cyanamide salts) | Synonyms: cyanamide |
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| cyanamide | (noun) a weak soluble dibasic acid (the parent acid of cyanamide salts) | Synonyms: cyanamid |
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| (noun) a compound used as a fertilizer and as a source of nitrogen compounds | Synonyms: calcium-cyanamide |
| cyanocobalamin | (noun) a B vitamin that is used to treat pernicious anemia | Synonyms: antipernicious anemia factor, cobalamin, vitamin B12 |
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| cyanuramide | (noun) a white crystalline organic base; used mainly in making melamine resins | Synonyms: melamine |
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| daminozide | (noun) a chemical sprayed on fruit trees to regulate their growth so the entire crop can be harvested at one time | Synonyms: Alar |
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| daydreaming | (noun) absentminded dreaming while awake | Synonyms: air castle, castle in Spain, castle in the air, daydream, oneirism, reverie, revery |
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| deaminate | (verb) remove the amino radical (usually by hydrolysis) from an amino compound; to perform deamination | Synonyms: deaminize |
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| deamination | (noun) removal of the amino radical from an amino acid or other amino compound | Synonyms: deaminization |
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| deaminization | (noun) removal of the amino radical from an amino acid or other amino compound | Synonyms: deamination |
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| deaminize | (verb) remove the amino radical (usually by hydrolysis) from an amino compound; to perform deamination | Synonyms: deaminate |
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| decontaminate | (verb) rid of contamination | - |
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| decontamination | (noun) the removal of contaminants | - |
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| desipramine | (noun) a tricyclic antidepressant drug that activates the psychomotor system | - |
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| diamine | (noun) any organic compound containing two amino groups | - |
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| diphenhydramine | (noun) antihistamine (trade name Benadryl) used to treat allergic reactions involving the nasal passages (hay fever) and also to treat motion sickness | Synonyms: Benadryl |
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