| acetabular | (adjective) of the cup-shaped socket that receives the head of the thigh bone | Synonyms: cotyloid, cotyloidal |
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| acetabulum | (noun) the cup-shaped hollow in the hipbone into which the head of the femur fits to form a ball-and-socket joint | Synonyms: cotyloid cavity |
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| acetal | (noun) any organic compound formed by adding alcohol molecules to aldehyde molecules | - |
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| acetaldehyde | (noun) a colorless volatile water-soluble liquid aldehyde used chiefly in the manufacture of acetic acid and perfumes and drugs | Synonyms: ethanal |
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| acetaldol | (noun) unsaturated aldol | - |
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| 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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| acetanilid | (noun) a solid odourless chemical of leaf or flake-like appearance; used in rubber accelerator, dye, and camphor synthesis; metabolised to paracetamol (acetaminophen) | Synonyms: acetanilide, phenylacetamide |
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| acetanilide | (noun) a solid odourless chemical of leaf or flake-like appearance; used in rubber accelerator, dye, and camphor synthesis; metabolised to paracetamol (acetaminophen) | Synonyms: acetanilid, phenylacetamide |
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| acetate | (noun) a fabric made from fibers of cellulose acetate | Synonyms: acetate rayon |
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| (noun) a salt or ester of acetic acid | Synonyms: ethanoate |
| acetic | (adjective) relating to or containing acetic acid | - |
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| acetify | (verb) turn acidic | Synonyms: acidify |
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| (verb) make sour or more sour | Synonyms: acidify, acidulate, sour |
| acetin | (noun) any of three liquid acetates that are formed when acetic acid and glycerin are heated together | - |
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| acetone | (noun) the simplest ketone; a highly flammable liquid widely used as an organic solvent and as material for making plastics | Synonyms: dimethyl ketone, propanone |
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| acetonemia | (noun) an abnormal increase of ketone bodies in the blood as in diabetes mellitus | Synonyms: ketonemia, ketosis |
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| acetonic | (adjective) of or relating to acetone | - |
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| acetonuria | (noun) excessive amounts of ketone bodies in the urine as in diabetes mellitus or starvation | Synonyms: ketoaciduria, ketonuria |
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| acetophenetidin | (noun) a white crystalline compound used as an analgesic and also as an antipyretic | Synonyms: acetphenetidin, phenacetin |
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| acetose | (adjective) tasting or smelling like vinegar | Synonyms: acetous, vinegarish, vinegary |
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| acetous | (adjective) tasting or smelling like vinegar | Synonyms: acetose, vinegarish, vinegary |
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| acetphenetidin | (noun) a white crystalline compound used as an analgesic and also as an antipyretic | Synonyms: acetophenetidin, phenacetin |
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| acetum | (noun) sour-tasting liquid produced usually by oxidation of the alcohol in wine or cider and used as a condiment or food preservative | Synonyms: vinegar |
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| (noun) a dilute solution of acetic acid that is used as a solvent (e.g. for a drug) | - |
| acetyl | (noun) the organic group of acetic acid (CH3CO-) | Synonyms: acetyl group, acetyl radical, ethanoyl group, ethanoyl radical |
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| acetylate | (verb) receive substitution of an acetyl group | Synonyms: acetylise, acetylize |
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| (verb) introduce an acetyl group into (a chemical compound) | Synonyms: acetylise, acetylize |
| acetylation | (noun) the process of introducing an acetyl group into a compound | - |
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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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| acetylene | (noun) a colorless flammable gas used chiefly in welding and in organic synthesis | Synonyms: alkyne, ethyne |
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| acetylenic | (adjective) of or related to acetylene | - |
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| acetylic | (adjective) of or related to acetic acid | - |
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| acetylise | (verb) receive substitution of an acetyl group | Synonyms: acetylate, acetylize |
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| (verb) introduce an acetyl group into (a chemical compound) | Synonyms: acetylate, acetylize |
| acetylize | (verb) receive substitution of an acetyl group | Synonyms: acetylate, acetylise |
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| (verb) introduce an acetyl group into (a chemical compound) | Synonyms: acetylate, acetylise |
| actinomycetal | (adjective) of or belonging to the actinomycetes | Synonyms: actinomycetous |
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| actinomycete | (noun) any bacteria (some of which are pathogenic for humans and animals) belonging to the order Actinomycetales | - |
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| actinomycetous | (adjective) of or belonging to the actinomycetes | Synonyms: actinomycetal |
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| ascetic | (adjective) pertaining to or characteristic of an ascetic or the practice of rigorous self-discipline | Synonyms: ascetical |
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| (adjective) practicing great self-denial | Synonyms: ascetical, austere, spartan |
| (noun) someone who practices self denial as a spiritual discipline | Synonyms: abstainer |
| ascetical | (adjective) pertaining to or characteristic of an ascetic or the practice of rigorous self-discipline | Synonyms: ascetic |
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| (adjective) practicing great self-denial | Synonyms: ascetic, austere, spartan |
| ascetically | (adverb) in an ascetic manner | - |
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| asceticism | (noun) rigorous self-denial and active self-restraint | Synonyms: ascesis |
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| (noun) the trait of great self-denial (especially refraining from worldly pleasures) | Synonyms: austerity, nonindulgence |
| (noun) the doctrine that through renunciation of worldly pleasures it is possible to achieve a high spiritual or intellectual state | - |
| ascomycete | (noun) any fungus of the class Ascomycetes (or subdivision Ascomycota) in which the spores are formed inside an ascus | Synonyms: ascomycetous fungus |
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| ascomycetous | (adjective) related to or characteristic of fungi of the class Ascomycetes | - |
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| avocet | (noun) long-legged web-footed black-and-white shorebird with slender upward-curving bill | - |
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| basidiomycete | (noun) any of various fungi of the subdivision Basidiomycota | Synonyms: basidiomycetous fungi |
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| basidiomycetous | (adjective) pertaining to or characteristic of fungi of the class Basidiomycetes | - |
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| blastomycete | (noun) any of various yeastlike budding fungi of the genus Blastomyces; cause disease in humans and other animals | - |
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| cetacean | (adjective) of or relating to whales and dolphins etc | Synonyms: cetaceous |
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| (noun) large aquatic carnivorous mammal with fin-like forelimbs no hind limbs, including: whales, dolphins, porpoises, narwhals | Synonyms: blower, cetacean mammal |
| cetaceous | (adjective) of or relating to whales and dolphins etc | Synonyms: cetacean |
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| cetchup | (noun) thick spicy sauce made from tomatoes | Synonyms: catsup, ketchup, tomato ketchup |
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| cetrimide | (noun) a cationic detergent that is a powerful disinfectant | - |
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| chloroacetophenone | (noun) a tear gas that is weaker than CS gas but lasts longer | Synonyms: CN gas |
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| copacetic | (adjective) completely satisfactory | Synonyms: copasetic, copesetic, copesettic |
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| diacetylmorphine | (noun) a narcotic that is considered a hard drug; a highly addictive morphine derivative; intravenous injection provides the fastest and most intense rush | Synonyms: heroin |
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| discomycete | (noun) any fungus that is a member of the subclass Discomycetes | Synonyms: cup fungus |
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| discomycetous | (adjective) relating to or characteristic of fungi of the subclass Discomycetes | - |
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| dulcet | (adjective) pleasing to the ear | Synonyms: honeyed, mellifluous, mellisonant, sweet |
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| (adjective) extremely pleasant in a gentle way | - |
| esparcet | (noun) Eurasian perennial herb having pale pink flowers and curved pods; naturalized in Britain and North America grasslands on calcareous soils; important forage crop and source of honey in Britain | Synonyms: holy clover, Onobrychis viciaefolia, Onobrychis viciifolia, sainfoin, sanfoin |
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| etcetera | (noun) additional unspecified odds and ends; more of the same; entity, other pronoun; pronoun, entity; quantifier: other | - |
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| (adverb) continuing in the same way | Synonyms: and so forth, and so on, etc. |
| facet | (noun) a distinct feature or element in a problem | Synonyms: aspect |
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| (noun) a smooth surface (as of a bone or cut gemstone) | - |
| faceted | (adjective) having facets | - |
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| facetious | (adjective) cleverly amusing in tone | Synonyms: bantering, tongue-in-cheek |
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| facetiously | (adverb) not seriously | Synonyms: jokingly, tongue-in-cheek |
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| facetiousness | (noun) playful humor | - |
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| faucet | (noun) a regulator for controlling the flow of a liquid from a reservoir | Synonyms: spigot |
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| gasteromycete | (noun) any fungus of the class Gasteromycetes | Synonyms: gastromycete |
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| gastromycete | (noun) any fungus of the class Gasteromycetes | Synonyms: gasteromycete |
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| hemiacetal | (noun) an organic compound usually formed as an intermediate product in the preparation of acetals from aldehydes or ketones | - |
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| icetray | (noun) a tray for making cubes of ice in a refrigerator | - |
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| lancet | (noun) a surgical knife with a pointed double-edged blade; used for punctures and small incisions | Synonyms: lance |
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| (noun) an acutely pointed Gothic arch, like a lance | Synonyms: lancet arch |
| lancetfish | (noun) large elongate scaleless oceanic fishes with sharp teeth and a long dorsal fin that resembles a sail | Synonyms: lancet fish, wolffish |
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| multifaceted | (adjective) having many aspects or qualities | Synonyms: many-sided, miscellaneous, multifarious |
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| myxomycete | (noun) a slime mold of the class Myxomycetes | Synonyms: acellular slime mold, plasmodial slime mold, true slime mold |
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| nicety | (noun) conformity with some esthetic standard of correctness or propriety | Synonyms: justness, rightness |
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| (noun) a subtle difference in meaning or opinion or attitude | Synonyms: nuance, refinement, shade, subtlety |
| oxalacetate | (noun) a salt or ester of oxalacetic acid | Synonyms: oxaloacetate |
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| oxaloacetate | (noun) a salt or ester of oxalacetic acid | Synonyms: oxalacetate |
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| oxyacetylene | (noun) a mixture of oxygen and acetylene; used to create high temperatures for cutting or welding metals | - |
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| peacetime | (noun) a period of time during which there is no war | - |
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| phenacetin | (noun) a white crystalline compound used as an analgesic and also as an antipyretic | Synonyms: acetophenetidin, acetphenetidin |
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| phenylacetamide | (noun) a solid odourless chemical of leaf or flake-like appearance; used in rubber accelerator, dye, and camphor synthesis; metabolised to paracetamol (acetaminophen) | Synonyms: acetanilid, acetanilide |
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| racetrack | (noun) a course over which races are run | Synonyms: racecourse, raceway, track |
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| spermaceti | (noun) a white waxy substance from oil of the sperm whale | - |
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| sulfacetamide | (noun) a topical sulfonamide (trade name Sulamyd) used to treat eye infections | Synonyms: Sulamyd |
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| tercet | (noun) the cardinal number that is the sum of one and one and one | Synonyms: 3, deuce-ace, III, leash, ternary, ternion, terzetto, three, threesome, tierce, trey, triad, trine, trinity, trio, triplet, troika |
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| triacetate | (noun) cellulose acetate that is relatively slow to burn; used instead of celluloid for motion-picture film | Synonyms: cellulose triacetate |
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| unfaceted | (adjective) lacking facets | - |
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| videlicet | (adverb) as follows | Synonyms: namely, that is to say, to wit, viz. |
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