| ameliorative | (adjective) tending to ameliorate | Synonyms: ameliorating, amelioratory, meliorative |
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| amelioratory | (adjective) tending to ameliorate | Synonyms: ameliorating, ameliorative, meliorative |
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| ameloblast | (noun) a cell from which tooth enamel develops | - |
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| amelogenesis | (noun) the developmental process of forming tooth enamel | - |
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| amenability | (noun) the trait of being cooperative | Synonyms: amenableness, cooperativeness |
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| amenable | (adjective) disposed or willing to conform | Synonyms: conformable |
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| (adjective) liable to answer to a higher authority | - |
| (adjective) responsive to suggestions and influences | Synonyms: tractable |
| (adjective) open to being acted upon in a certain way | - |
| amenableness | (noun) the trait of being cooperative | Synonyms: amenability, cooperativeness |
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| amend | (verb) to make better | Synonyms: ameliorate, better, improve, meliorate |
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| (verb) set straight or right | Synonyms: rectify, remediate, remedy, repair |
| (verb) make amendments to | - |
| amendable | (adjective) capable of being corrected by additions | Synonyms: correctable |
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| amendatory | (adjective) effecting amendment | - |
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| amended | (adjective) of legislation | - |
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| (adjective) modified for the better | - |
| amendment | (noun) the act of amending or correcting | - |
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| (noun) a statement that is added to or revises or improves a proposal or document (a bill or constitution etc.) | - |
| amends | (noun) something done or paid in expiation of a wrong | Synonyms: reparation |
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| (noun) a sum of money paid in compensation for loss or injury | Synonyms: damages, indemnification, indemnity, redress, restitution |
| amenia | (noun) absence or suppression of normal menstrual flow | Synonyms: amenorrhea, amenorrhoea |
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| amenities | (noun) things that make you comfortable and at ease | Synonyms: comforts, conveniences, creature comforts |
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| amenity | (noun) pleasantness resulting from agreeable conditions | Synonyms: agreeableness |
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| amenorrhea | (noun) absence or suppression of normal menstrual flow | Synonyms: amenia, amenorrhoea |
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| amenorrheal | (adjective) related to the suppression of normal menstrual flow for any reason other than pregnancy | Synonyms: amenorrheic, amenorrhoeal, amenorrhoeic |
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| amenorrheic | (adjective) related to the suppression of normal menstrual flow for any reason other than pregnancy | Synonyms: amenorrheal, amenorrhoeal, amenorrhoeic |
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| amenorrhoea | (noun) absence or suppression of normal menstrual flow | Synonyms: amenia, amenorrhea |
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| amenorrhoeal | (adjective) related to the suppression of normal menstrual flow for any reason other than pregnancy | Synonyms: amenorrheal, amenorrheic, amenorrhoeic |
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| amenorrhoeic | (adjective) related to the suppression of normal menstrual flow for any reason other than pregnancy | Synonyms: amenorrheal, amenorrheic, amenorrhoeal |
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| ament | (noun) a cylindrical spikelike inflorescence | Synonyms: catkin |
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| amentaceous | (adjective) (of plants) bearing or characterized by aments or catkins | Synonyms: amentiferous |
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| amentia | (noun) extreme mental retardation | Synonyms: idiocy |
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| amentiferous | (adjective) (of plants) bearing or characterized by aments or catkins | Synonyms: amentaceous |
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| amerce | (verb) punish with an arbitrary penalty | - |
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| (verb) punish by a fine imposed arbitrarily by the discretion of the court | - |
| amercement | (noun) money extracted as a penalty | Synonyms: fine, mulct |
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| amerciable | (adjective) of a crime or misdemeanor; punishable by a fine set by a judge | - |
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| americium | (noun) a radioactive transuranic metallic element; discovered by bombarding uranium with helium atoms | Synonyms: Am, atomic number 95 |
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| ametabolic | (adjective) undergoing slight or no metamorphosis | Synonyms: ametabolous |
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| (adjective) undergoing no (or only slight) metamorphosis | - |
| ametabolous | (adjective) undergoing slight or no metamorphosis | Synonyms: ametabolic |
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| amethopterin | (noun) toxic antimetabolite that limits cellular reproduction by acting as an antagonist to folic acid; used to treat certain cancers and psoriasis and rheumatoid arthritis | Synonyms: methotrexate, methotrexate sodium |
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| amethyst | (adjective) of a moderate purple color | - |
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| (noun) a transparent purple variety of quartz; used as a gemstone | - |
| amethystine | (adjective) containing or resembling amethyst | - |
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| ametria | (noun) congenital absence of the uterus | - |
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| ametropia | (noun) (ophthalmology) faulty refraction of light rays in the eye as in astigmatism or myopia | - |
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| ametropic | (adjective) of or relating to an abnormal condition of the eye in which visual images are not in focus on the retina | - |
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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 | - |
| ammeter | (noun) a meter that measures the flow of electrical current in amperes | - |
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| ammine | (noun) a complex inorganic compound that contains ammonia molecules | - |
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| ammino | (adjective) pertaining to or characteristic of an ammine (an inorganic coordination compound of ammonia and a metallic salt) | - |
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| ammo | (noun) projectiles to be fired from a gun | Synonyms: ammunition |
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| ammobium | (noun) any plant of the genus Ammobium having yellow flowers and silvery foliage | - |
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| ammonal | (noun) Ammonal is an explosive made up of ammonium nitrate and aluminum powder. | - |
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| ammonia | (noun) a pungent gas compounded of nitrogen and hydrogen (NH3) | - |
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| (noun) a water solution of ammonia | Synonyms: ammonia water, ammonium hydroxide |
| ammoniac | (adjective) pertaining to or containing or similar to ammonia | Synonyms: ammoniacal |
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| (noun) the aromatic gum of the ammoniac plant | Synonyms: gum ammoniac |
| ammoniacal | (adjective) pertaining to or containing or similar to ammonia | Synonyms: ammoniac |
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| ammoniate | (verb) treat with ammonia | - |
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| ammoniated | (adjective) combined or treated with ammonia | - |
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| ammonification | (noun) impregnation with ammonia or a compound of ammonia | - |
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| ammonify | (verb) treat with ammonia; cause to undergo ammonification | - |
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| ammonite | (noun) one of the coiled chambered fossil shells of extinct mollusks | Synonyms: ammonoid |
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| ammonitic | (adjective) of or related to an order of fossil cephalopods | - |
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| ammonium | (noun) the ion NH4 derived from ammonia; behaves in many respects like an alkali metal ion | Synonyms: ammonium ion |
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| ammoniuria | (noun) excessive ammonia in the urine | - |
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| ammonoid | (noun) one of the coiled chambered fossil shells of extinct mollusks | Synonyms: ammonite |
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| ammunition | (noun) projectiles to be fired from a gun | Synonyms: ammo |
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| (noun) information that can be used to attack or defend a claim or argument or viewpoint | - |
| (noun) any nuclear or chemical or biological material that can be used as a weapon of mass destruction | - |
| amnesia | (noun) partial or total loss of memory | Synonyms: blackout, memory loss |
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| amnesiac | (adjective) suffering from a partial loss of memory | Synonyms: amnesic |
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| (noun) a person suffering from amnesia | Synonyms: amnesic |
| amnesic | (adjective) of or relating to or caused by amnesia | Synonyms: amnestic |
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| (adjective) suffering from a partial loss of memory | Synonyms: amnesiac |
| (noun) a person suffering from amnesia | Synonyms: amnesiac |
| amnestic | (adjective) of or relating to or caused by amnesia | Synonyms: amnesic |
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| amnesty | (noun) the formal act of liberating someone | Synonyms: free pardon, pardon |
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| (noun) a warrant granting release from punishment for an offense | Synonyms: pardon |
| (noun) a period during which offenders are exempt from punishment | - |
| (verb) grant a pardon to (a group of people) | - |
| amnic | (adjective) of or related to the amnion or characterized by developing an amnion | Synonyms: amnionic, amniotic |
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| amnio | (noun) (pregnancy) extraction by centesis of amniotic fluid from a pregnant woman (after the 15th week of pregnancy) to aid in the diagnosis of fetal abnormalities | Synonyms: amniocentesis |
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| amniocentesis | (noun) (pregnancy) extraction by centesis of amniotic fluid from a pregnant woman (after the 15th week of pregnancy) to aid in the diagnosis of fetal abnormalities | Synonyms: amnio |
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| amnion | (noun) thin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles, birds and mammals) | Synonyms: amnios, amniotic sac |
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| amnionic | (adjective) of or related to the amnion or characterized by developing an amnion | Synonyms: amnic, amniotic |
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| amnios | (noun) thin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles, birds and mammals) | Synonyms: amnion, amniotic sac |
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