| aardwolf | (noun) striped hyena of southeast Africa that feeds chiefly on insects | Synonyms: Proteles cristata |
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| abolishment | (noun) the act of abolishing a system or practice or institution (especially abolishing slavery) | Synonyms: abolition |
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| abolition | (noun) the act of abolishing a system or practice or institution (especially abolishing slavery) | Synonyms: abolishment |
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| abolitionism | (noun) the doctrine that calls for the abolition of slavery | - |
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| abolitionist | (noun) a reformer who favors abolishing slavery | Synonyms: emancipationist |
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| absolute | (noun) something that is conceived or that exists independently and not in relation to other things; something that does not depend on anything else and is beyond human control; something that is not relative | - |
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| absoluteness | (noun) the quality of being absolute | - |
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| (noun) the quality of being complete or utter or extreme | Synonyms: starkness, utterness |
| absolution | (noun) the act of absolving or remitting; formal redemption as pronounced by a priest in the sacrament of penance | Synonyms: remission, remission of sin, remittal |
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| (noun) the condition of being formally forgiven by a priest in the sacrament of penance | - |
| absolutisation | (noun) the process of rendering something absolute or converting it into an absolute. | Synonyms: absolutization |
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| absolutism | (noun) the doctrine of an absolute being, often related to idealism in philosophy. | - |
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| (noun) an ideological belief in the complete and unrestricted power of government. | Synonyms: totalism, totalitarianism |
| (noun) a form of government in which the ruler is an absolute dictator (not restricted by a constitution or laws or opposition etc.) | Synonyms: authoritarianism, Caesarism, despotism, dictatorship, monocracy, one-man rule, shogunate, Stalinism, totalitarianism, tyranny |
| (noun) dominance through threat of punishment and violence | Synonyms: despotism, tyranny |
| absolutist | (noun) one who advocates absolutism | - |
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| absolutization | (noun) the process of rendering something absolute or converting it into an absolute. | Synonyms: absolutisation |
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| absolver | (noun) someone who grants absolution | - |
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| abvolt | (noun) a unit of potential equal to one-hundred-millionth of a volt | - |
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| acantholysis | (noun) a breakdown of a cell layer in the epidermis (as in pemphigus) | - |
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| accolade | (noun) a tangible symbol signifying approval or distinction | Synonyms: award, honor, honour, laurels |
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| acebutolol | (noun) an oral beta blocker (trade name Sectral) used in treating hypertension | Synonyms: Sectral |
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| acerola | (noun) acid red or yellow cherry-like fruit of a tropical American shrub very rich in vitamin C | Synonyms: barbados cherry, surinam cherry, West Indian cherry |
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| (noun) tropical American shrub bearing edible acid red fruit resembling cherries | Synonyms: barbados cherry, Malpighia glabra, Surinam cherry, West Indian cherry |
| acetaldol | (noun) unsaturated aldol | - |
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| acetylcholine | (noun) a neurotransmitter that is a derivative of choline; released at the ends of nerve fibers in the somatic and parasympathetic nervous systems | - |
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| acholia | (noun) a condition in which little or no bile is secreted or the flow of bile into the digestive tract is obstructed | Synonyms: cholestasis |
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| acolyte | (noun) someone who assists a priest or minister in a liturgical service; a cleric ordained in the highest of the minor orders in the Roman Catholic Church but not in the Anglican Church or the Eastern Orthodox Churches | - |
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| acrolein | (noun) a pungent colorless unsaturated liquid aldehyde made from propene | Synonyms: propenal |
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| acropolis | (noun) the citadel in ancient Greek towns | - |
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| actinolite | (noun) a green mineral of the amphibole group; calcium magnesium iron silicate | - |
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| acylglycerol | (noun) an ester of glycerol and fatty acids that occurs naturally as fats and fatty oils | Synonyms: glyceride |
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| adolescence | (noun) in the state that someone is in between puberty and adulthood | - |
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| (noun) the time period between the beginning of puberty and adulthood | - |
| adolescent | (noun) a juvenile between the onset of puberty and maturity | Synonyms: stripling, teen, teenager |
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| aeroembolism | (noun) obstruction of the circulatory system caused by an air bubble as, e.g., accidentally during surgery or hypodermic injection or as a complication from scuba diving | Synonyms: air embolism, gas embolism |
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| (noun) pain resulting from rapid change in pressure | Synonyms: air embolism, bends, caisson disease, decompression sickness, gas embolism |
| aerolite | (noun) a stony meteorite consisting of silicate minerals | - |
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| aerology | (noun) meteorology of the total extent of the atmosphere; especially the upper layers | - |
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| aerosol | (noun) a dispenser that holds a substance under pressure and that can release it as a fine spray (usually by means of a propellant gas) | Synonyms: aerosol bomb, aerosol can, aerosol container, spray can |
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| (noun) a cloud of solid or liquid particles in a gas | - |
| aetiologist | (noun) a specialist in the etiology of diseases | Synonyms: etiologist |
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| aetiology | (noun) the philosophical study of causation | Synonyms: etiology |
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| (noun) the cause of a disease | Synonyms: etiology |
| agrobiology | (noun) the study of plant nutrition and growth especially as a way to increase crop yield | - |
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| agrology | (noun) science of soils in relation to crops | - |
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| aioli | (noun) garlic mayonnaise | Synonyms: aioli sauce, garlic sauce |
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| albuterol | (noun) a bronchodilator (trade names Ventolin or Proventil) used for asthma and emphysema and other lung conditions; available in oral or inhalant forms; side effects are tachycardia and shakiness | Synonyms: Proventil, Ventolin |
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| alcohol | (noun) a liquor or brew containing alcohol as the active agent | Synonyms: alcoholic beverage, alcoholic drink, inebriant, intoxicant |
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| (noun) any of a series of volatile hydroxyl compounds that are made from hydrocarbons by distillation | - |
| alcoholic | (noun) a person who drinks alcohol to excess habitually | Synonyms: alky, boozer, dipsomaniac, lush, soaker, souse |
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| alcoholism | (noun) an intense persistent desire to drink alcoholic beverages to excess | Synonyms: dipsomania, potomania |
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| (noun) habitual intoxication; prolonged and excessive intake of alcoholic drinks leading to a breakdown in health and an addiction to alcohol such that abrupt deprivation leads to severe withdrawal symptoms | Synonyms: alcohol addiction, drunkenness, inebriation |
| aldol | (noun) an oily colorless liquid obtained by the condensation of two molecules of acetaldehyde; contains an alcohol group (-OH) and an aldehyde group (-CHO) | Synonyms: aldehyde-alcohol |
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| algolagnia | (noun) sexual pleasure derived from inflicting or experiencing pain | Synonyms: algophilia |
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| algology | (noun) the branch of botany that studies algae | Synonyms: phycology |
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| allergology | (noun) the branch of medical science that studies the causes and treatment of allergies | - |
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| allopurinol | (noun) a drug (trade name Zyloprim) used to treat gout and other conditions in which there is an excessive buildup of uric acid | Synonyms: Zyloprim |
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| alprazolam | (noun) an antianxiety agent (trade name Xanax) of the benzodiazepine class | Synonyms: Xanax |
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| alveolar | (noun) a consonant articulated with the tip of the tongue near the gum ridge | Synonyms: alveolar consonant, dental, dental consonant |
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| alveolitis | (noun) inflammation of the alveoli in the lungs caused by inhaling dust; with repeated exposure the condition may become chronic | - |
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| (noun) inflammation in the socket of a tooth; sometimes occurs after a tooth is extracted and a blood clot fails to form | Synonyms: dry socket |
| alveolus | (noun) a tiny sac for holding air in the lungs; formed by the terminal dilation of tiny air passageways | Synonyms: air cell, air sac |
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| (noun) a bony socket in the alveolar ridge that holds a tooth | Synonyms: tooth socket |
| amphibole | (noun) a mineral or mineral variety belonging to the amphibole group | - |
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| amphibolite | (noun) a metamorphic rock composed chiefly of amphibole and plagioclase | - |
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| amphibology | (noun) an ambiguous grammatical construction; e.g., `they are flying planes' can mean either that someone is flying planes or that something is flying planes | Synonyms: amphiboly |
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| amphiboly | (noun) an ambiguous grammatical construction; e.g., `they are flying planes' can mean either that someone is flying planes or that something is flying planes | Synonyms: amphibology |
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| ampholyte | (noun) A substance that acts as a base or an acid, depending on the pH of the solution into which it is introduced. | Synonyms: amphoteric electrolyte |
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| amylolysis | (noun) conversion of starch to sugar | - |
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| anabolism | (noun) the synthesis in living organisms of more complex substances (e.g., living tissue) from simpler ones together with the storage of energy | Synonyms: constructive metabolism |
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| anacoluthia | (noun) an abrupt change within a sentence from one syntactic structure to another | Synonyms: anacoluthon |
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| anacoluthon | (noun) an abrupt change within a sentence from one syntactic structure to another | Synonyms: anacoluthia |
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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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| anethole | (noun) an organic compound that is widely used as a flavoring substance. | Synonyms: anise camphor |
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| angelology | (noun) the branch of theology that is concerned with angels | - |
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| angiologist | (noun) a physician who specializes in angiology | - |
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| angiology | (noun) the branch of medical science that studies the blood and lymph vessels and their disorders | - |
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| anole | (noun) small arboreal tropical American insectivorous lizards with the ability to change skin color | Synonyms: American chameleon, Anolis carolinensis |
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| anthologist | (noun) an editor who makes selections for an anthology | - |
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| anthology | (noun) a collection of selected literary passages | - |
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| anthropolatry | (noun) the worship of human beings | Synonyms: worship of man |
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| anthropologism | (noun) a point of view in which human nature is exhaustively determined by the culture in which a person lives, leaving no room for human agency. | - |
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| anthropologist | (noun) a social scientist who specializes in anthropology | - |
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| anthropology | (noun) the social science that studies the origins and social relationships of human beings | - |
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| anticholinergic | (noun) a substance that opposes or blocks the action of acetylcholine | Synonyms: anticholinergic drug |
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| anticholinesterase | (noun) a medicine that inhibits cholinesterase by combining with it and so has a cholinergic effect | - |
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| antimetabolite | (noun) an antineoplastic drug that inhibits the utilization of a metabolite | - |
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| anxiolytic | (noun) a tranquilizer used to relieve anxiety and reduce tension and irritability | Synonyms: antianxiety drug, anxiolytic drug, minor tranquilizer, minor tranquilliser, minor tranquillizer |
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| apolemia | (noun) large siphonophore of up to 50 ft long | - |
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| apoliticism | (noun) Apathy and/or antipathy towards all political affiliations. | - |
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| apologetics | (noun) the branch of theology that is concerned with the defense of Christian doctrines | - |
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| apologia | (noun) a formal written defense of something you believe in strongly | Synonyms: apology |
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| apologist | (noun) a person who argues to defend or justify some policy or institution | Synonyms: justifier, vindicator |
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| apologue | (noun) a short moral story (often with animal characters) | Synonyms: allegory, fable, parable |
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| apology | (noun) a poor example | Synonyms: excuse |
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| (noun) an expression of regret at having caused trouble for someone | - |
| (noun) a formal written defense of something you believe in strongly | Synonyms: apologia |
| apolune | (noun) apoapsis in orbit around the moon | Synonyms: aposelene |
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| arborolatry | (noun) the worship of trees | Synonyms: tree-worship |
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| archaeologist | (noun) an anthropologist who studies prehistoric people and their culture | Synonyms: archeologist |
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| archaeology | (noun) the branch of anthropology that studies prehistoric people and their cultures | Synonyms: archeology |
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| archeologist | (noun) an anthropologist who studies prehistoric people and their culture | Synonyms: archaeologist |
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| archeology | (noun) the branch of anthropology that studies prehistoric people and their cultures | Synonyms: archaeology |
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| areola | (noun) small circular area such as that around the human nipple or an inflamed area around a pimple or insect bite | Synonyms: ring of color |
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| (noun) small space in a tissue or body part such as the area between veins on a leaf or an insect's wing | - |
| armhole | (noun) a hole through which you put your arm and where a sleeve can be attached | - |
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| arsehole | (noun) vulgar slang for anus | Synonyms: arse, asshole, bunghole |
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| arteriola | (noun) one of the small thin-walled arteries that end in capillaries | Synonyms: arteriole, capillary artery |
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| arteriole | (noun) one of the small thin-walled arteries that end in capillaries | Synonyms: arteriola, capillary artery |
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| arteriolosclerosis | (noun) sclerosis of the arterioles | - |
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| ascolichen | (noun) a lichen in which the fungus component is an ascomycete | - |
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| asshole | (noun) vulgar slang for anus | Synonyms: arse, arsehole, bunghole |
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| (noun) insulting terms of address for people who are stupid or irritating or ridiculous | Synonyms: bastard, cocksucker, dickhead, mother fucker, motherfucker, prick, shit, SOB, son of a bitch, whoreson |
| astrobiology | (noun) the branch of biology concerned with the effects of outer space on living organisms and the search for extraterrestrial life | Synonyms: exobiology, space biology |
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| astrolabe | (noun) an early form of sextant | - |
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| astrolatry | (noun) the worship of planets or stars | Synonyms: worship of heavenly bodies |
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