| aldosterone | (noun) a corticosteroid hormone that is secreted by the cortex of the adrenal gland; regulates salt (sodium and potassium) and water balance | - |
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| alertness | (noun) lively attentiveness | Synonyms: on the qui vive, sharp-sightedness |
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| (noun) the process of paying close and continuous attention | Synonyms: vigilance, wakefulness, watchfulness |
| (noun) a state of readiness to respond | Synonyms: alerting |
| aleurone | (noun) granular protein in outermost layer of endosperm of many seeds or cereal grains | - |
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| alienee | (noun) someone to whom the title of property is transferred | Synonyms: grantee |
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| aligned | (adjective) brought into agreement or cooperation on the side of a faction, party, or cause | - |
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| (adjective) in a straight line | - |
| alikeness | (noun) similarity in appearance or character or nature between persons or things | Synonyms: likeness, similitude |
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| aline | (verb) place in a line or arrange so as to be parallel or straight | Synonyms: adjust, align, line up |
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| alinement | (noun) an organization of people (or countries) involved in a pact or treaty | Synonyms: alignment, alliance, coalition |
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| aliveness | (noun) the property of being animated; having animal life as distinguished from plant life | Synonyms: animateness, liveness |
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| (noun) the condition of living or the state of being alive | Synonyms: animation, life, living |
| alizarine | (noun) an orange-red crystalline compound used in making red pigments and in dyeing | Synonyms: alizarin |
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| alkaline | (adjective) relating to or containing an alkali; having a pH greater than 7 | Synonyms: alkalic |
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| alkane | (noun) a series of non-aromatic saturated hydrocarbons with the general formula CnH(2n+2) | Synonyms: alkane series, methane series, paraffin, paraffin series |
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| alkanet | (noun) perennial or biennial herb cultivated for its delicate usually blue flowers | Synonyms: Anchusa officinalis, bugloss |
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| alkene | (noun) any unsaturated aliphatic hydrocarbon | Synonyms: olefin, olefine |
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| alkylbenzene | (noun) organic compound that has an alkyl group bound to a benzene ring | - |
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| alkylbenzenesulfonate | (noun) sulfonate of alkyl benzene | - |
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| alkyne | (noun) a colorless flammable gas used chiefly in welding and in organic synthesis | Synonyms: acetylene, ethyne |
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| allegoricalness | (noun) The state or quality of being allegorical. | - |
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| allogeneic | (adjective) denoting or relating to cells or tissues from individuals belonging to the same species but genetically dissimilar (and hence immunologically incompatible) | - |
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| allophone | (noun) (linguistics) any of various acoustically different forms of the same phoneme | - |
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| allusiveness | (noun) a quality characterized by indirect reference | - |
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| almandine | (noun) a purple variety of the ruby spinel | - |
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| (noun) a deep red garnet consisting of iron aluminum silicate | Synonyms: almandite |
| almoner | (noun) an official in a British hospital who looks after the social and material needs of the patients | Synonyms: medical social worker |
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| alone | (adjective) exclusive of anyone or anything else | Synonyms: only |
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| (adjective) radically distinctive and without equal | Synonyms: unequaled, unequalled, unique, unparalleled |
| (adjective) lacking companions or companionship | Synonyms: lone, lonely, solitary |
| (adjective) isolated from others | - |
| (adverb) without any others being included or involved | Synonyms: entirely, exclusively, only, solely |
| (adverb) without anybody else or anything else | Synonyms: solo, unaccompanied |
| aloneness | (noun) a disposition toward being alone | Synonyms: loneliness, lonesomeness, solitariness |
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| aloofness | (noun) a disposition to be distant and unsympathetic in manner | Synonyms: remoteness, standoffishness, withdrawnness |
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| (noun) indifference by personal withdrawal | Synonyms: distance |
| alpestrine | (adjective) growing at high altitudes | Synonyms: subalpine |
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| alpine | (adjective) relating to or characteristic of alps | - |
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| (adjective) living or growing above the timber line | - |
| alvine | (adjective) of or relating to the intestines | - |
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| amaranthine | (adjective) of or related to the amaranth plant | - |
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| (adjective) of an imaginary flower that never fades | Synonyms: unfading |
| amateurishness | (noun) something that demonstrates a lack of professional competency | - |
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| amativeness | (noun) the arousal of feelings of sexual desire | Synonyms: amorousness, eroticism, erotism, sexiness |
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| ambidextrousness | (noun) the property of being equally skillful with each hand | Synonyms: ambidexterity |
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| ambitiousness | (noun) a strong drive for success | Synonyms: ambition |
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| amelogenesis | (noun) the developmental process of forming tooth enamel | - |
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| amenableness | (noun) the trait of being cooperative | Synonyms: amenability, cooperativeness |
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| amethystine | (adjective) containing or resembling amethyst | - |
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| amiableness | (noun) a disposition to be friendly and approachable (easy to talk to) | Synonyms: affability, affableness, amiability, bonhomie, geniality |
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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 |
| amidopyrine | (noun) a white crystalline substance used as an analgesic and antipyretic | Synonyms: aminopyrine |
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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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| 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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| aminophylline | (noun) a theophylline derivative that is used as a bronchodilator in the treatment of bronchial asthma, emphysema, and bronchitis | - |
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| aminopyrine | (noun) a white crystalline substance used as an analgesic and antipyretic | Synonyms: amidopyrine |
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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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| 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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| ammine | (noun) a complex inorganic compound that contains ammonia molecules | - |
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| 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) | - |
| amorousness | (noun) a feeling of love or fondness | Synonyms: enamoredness |
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| (noun) the arousal of feelings of sexual desire | Synonyms: amativeness, eroticism, erotism, sexiness |
| 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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| ampleness | (noun) the property of impressive largeness in size | - |
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| (noun) the property of being more than sufficient; comfortable sufficiency | - |
| amrinone | (noun) a drug (trade name Inocor) used intravenously in heart failure; increases strength of contraction of myocardium | Synonyms: Inocor |
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| amygdaline | (adjective) related to or resembling an almond | - |
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| analbuminemia | (noun) an abnormally low level of albumin in the blood serum | - |
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| anamnesis | (noun) the ability to recall past occurrences | Synonyms: recollection, remembrance |
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| (noun) the case history of a medical patient as recalled by the patient | Synonyms: medical history, medical record |
| anamnestic | (adjective) of or relating to anamnesis; aiding the memory | - |
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| ancientness | (noun) extreme oldness | Synonyms: antiquity |
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| androgenesis | (noun) male parthenogenesis in which the embryo contains only paternal chromosomes due to the failure of the egg nucleus to participate in fertilization | Synonyms: androgeny |
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| androgenetic | (adjective) of or related to androgenesis | Synonyms: androgenous |
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| androgyne | (noun) one having both male and female sexual characteristics and organs; at birth an unambiguous assignment of male or female cannot be made | Synonyms: epicene, epicene person, gynandromorph, hermaphrodite, intersex |
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| androsterone | (noun) an androgenic hormone that is less active than testosterone | - |
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| ane | (adjective) used of a single unit or thing; not two or more | Synonyms: 1, i, one |
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| anecdotal | (adjective) having the character of an anecdote | - |
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| (adjective) characterized by or given to telling anecdotes | Synonyms: anecdotic, anecdotical |
| anecdotalism | (noun) The property of being related to short accounts of real incidents or persons, often humorous or interesting. | - |
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| anecdote | (noun) short account of an incident (especially a biographical one) | - |
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| anecdotic | (adjective) characterized by or given to telling anecdotes | Synonyms: anecdotal, anecdotical |
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| anecdotical | (adjective) characterized by or given to telling anecdotes | Synonyms: anecdotal, anecdotic |
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| anecdotist | (noun) a person skilled in telling anecdotes | Synonyms: raconteur |
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| anechoic | (adjective) not having or producing echoes; sound-absorbent | - |
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| anele | (verb) administer an oil or ointment to; often in a religious ceremony of blessing | Synonyms: anoint, embrocate, inunct, oil |
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| anemia | (noun) a deficiency of red blood cells | Synonyms: anaemia |
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| (noun) a lack of vitality | Synonyms: anaemia |
| anemic | (adjective) relating to anemia or suffering from anemia | Synonyms: anaemic |
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| (adjective) lacking vigor or energy | Synonyms: anaemic |
| anemoclinometer | (noun) A type of instrument which measures the inclination of the wind to the horizontal plane. | - |
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| anemograph | (noun) An instrument which records wind velocities. | - |
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| anemographic | (adjective) pertaining to the recording of wind measurements | - |
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| anemography | (noun) recording anemometrical measurements | - |
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| anemometer | (noun) a gauge for recording the speed and direction of wind | Synonyms: wind gage, wind gauge |
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| anemometric | (adjective) pertaining to the measurement of wind speed and direction | Synonyms: anemometrical |
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| anemometrical | (adjective) pertaining to the measurement of wind speed and direction | Synonyms: anemometric |
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| anemometry | (noun) measuring wind speed and direction | - |
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| anemone | (noun) marine polyps that resemble flowers but have oral rings of tentacles; differ from corals in forming no hard skeleton | Synonyms: sea anemone |
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| (noun) any woodland plant of the genus Anemone grown for its beautiful flowers and whorls of dissected leaves | Synonyms: windflower |
| anemophilous | (adjective) of flowering plants (especially grasses etc) that are pollinated by the wind | - |
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| anencephalia | (noun) a defect in brain development resulting in small or missing brain hemispheres | Synonyms: anencephaly |
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| anencephalic | (adjective) characterized by partial or total absence of a brain | Synonyms: anencephalous |
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| anencephalous | (adjective) characterized by partial or total absence of a brain | Synonyms: anencephalic |
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| anencephaly | (noun) a defect in brain development resulting in small or missing brain hemispheres | Synonyms: anencephalia |
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| anergy | (noun) reduction or lack of an immune response to a specific antigen | - |
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| (noun) inactivity and lack of energy | - |
| aneroid | (adjective) containing no liquid or actuated without the use of liquid | - |
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| (noun) a barometer that measures pressure without using fluids | Synonyms: aneroid barometer |
| anesthesia | (noun) loss of bodily sensation with or without loss of consciousness | Synonyms: anaesthesia |
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| anesthesiologist | (noun) a specialist who administers an anesthetic to a patient before he is treated | Synonyms: anaesthetist, anesthetist |
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| anesthesiology | (noun) the branch of medical science that studies and applies anesthetics | - |
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| anesthetic | (adjective) relating to or producing insensibility | Synonyms: anaesthetic |
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| (adjective) characterized by insensibility | Synonyms: anaesthetic |
| (noun) a drug that causes temporary loss of bodily sensations | Synonyms: anaesthetic, anaesthetic agent, anesthetic agent |
| anesthetise | (verb) administer an anesthetic drug to | Synonyms: anaesthetise, anaesthetize, anesthetize, put out, put under |
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| anesthetist | (noun) a specialist who administers an anesthetic to a patient before he is treated | Synonyms: anaesthetist, anesthesiologist |
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