Glossary · Nouns · A
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TermTypeDefinitionClassificationsUpdated
Allograftnountissue or organ transplanted from a donor of the same species but different genetic makeupverified
Allographnouna variant form of a grapheme, as `m' or `M' or a handwritten version of that graphemeverified
Allomerismnoun(chemistry) variability in chemical composition without variation in crystalline formverified
Allometrynounthe study of the relative growth of a part of an organism in relation to the growth of the wholeverified
Allopathynounthe usual method of treating disease with remedies that produce effects differing from those produced by the disease itselfverified
Allopatrynounthe occurrence of related organisms in separate geographical areas with no overlapverified
Allopurinolnouna drug (trade name Zyloprim) used to treat gout and other conditions in which there is an excessive buildup of uric acidverified
Allowance AccountnounMWEa reserve fund created by a charge against profits in order to provide for changes in the value of a company's assetsverified
Alloy Cast IronnounMWEcast iron containing alloying elements (usually nickel or chromium or copper or molybdenum) to increase the strength or facilitate heat treatmentverified
Alloy IronnounMWEcast iron containing alloying elements (usually nickel or chromium or copper or molybdenum) to increase the strength or facilitate heat treatmentverified
Alloy SteelnounMWEsteel who characteristics are determined by the addition of other elements in addition to carbonverified
Alluvial DepositnounMWEclay or silt or gravel carried by rushing streams and deposited where the stream slows downverified
Alluvial FlatnounMWEa flat resulting from repeated deposits of alluvial material by running waterverified
Alluvial PlainnounMWEa flat resulting from repeated deposits of alluvial material by running waterverified
Alluvial SedimentnounMWEclay or silt or gravel carried by rushing streams and deposited where the stream slows downverified
Alluvial SoilnounMWEa fine-grained fertile soil deposited by water flowing over flood plains or in river bedsverified
Alluvionnounclay or silt or gravel carried by rushing streams and deposited where the stream slows downverified
Alluviumnounclay or silt or gravel carried by rushing streams and deposited where the stream slows downverified
Almanacnounan annual publication including weather forecasts and other miscellaneous information arranged according to the calendar of a given yearverified
Almondnounsmall bushy deciduous tree native to Asia and North Africa having pretty pink blossoms and highly prized edible nuts enclosed in a hard green hullverified
Almond MothnounMWEa moth whose larvae feed on and mat together with webbing various stored products of vegetable originverified
Almond TreenounMWEany of several small bushy trees having pink or white blossoms and usually bearing nutsverified
Almond-Leaves WillownounMWEwillow of the western United States with leaves like those of peach or almond treesverified
Almonernounan official in a British hospital who looks after the social and material needs of the patientsverified
Alocasianounany plant of the genus Alocasia having large showy basal leaves and boat-shaped spathe and reddish berriesverified
Aloe FamilynounMWEone of many families or subfamilies into which some classification systems subdivide the Liliaceae but not widely acceptedverified
Alohanounan acknowledgment that can be used to say hello or goodbye (aloha is Hawaiian and ciao is Italian)verified
Alpacanouna thin glossy fabric made of the wool of the Lama pacos, or made of a rayon or cotton imitation of that woolverified
Alpha DecaynounMWEradioactive decay of an atomic nucleus that is accompanied by the emission of an alpha particleverified
Alpha GlobulinnounMWEa globulin in blood plasma or serum that is alkaline and has great electrophoretic mobilityverified
Alpha Methyl DopanounMWEantihypertensive drug (trade name Aldomet) used in the treatment of high blood pressureverified
Alpha ReceptornounMWEreceptors postulated to exist on nerve cell membranes of the sympathetic nervous system in order to explain the specificity of certain agents that affect only some sympathetic activities (such as vasoconstriction and relaxation of intestinal muscles and contraction of smooth muscles)verified
Alpha RhythmnounMWEthe normal brainwave in the electroencephalogram of a person who is awake but relaxedverified
Alpha SoftwarenounMWEa first release of a software product that is usually tested only by the developersverified
Alpha WavenounMWEthe normal brainwave in the electroencephalogram of a person who is awake but relaxedverified
Alpha-Adrenergic Blocking AgentnounMWEany of various drugs that block alpha-adrenergic receptorsverified
Alpha-Adrenergic ReceptornounMWEreceptors postulated to exist on nerve cell membranes of the sympathetic nervous system in order to explain the specificity of certain agents that affect only some sympathetic activities (such as vasoconstriction and relaxation of intestinal muscles and contraction of smooth muscles)verified
Alpha-Adrenoceptornounreceptors postulated to exist on nerve cell membranes of the sympathetic nervous system in order to explain the specificity of certain agents that affect only some sympathetic activities (such as vasoconstriction and relaxation of intestinal muscles and contraction of smooth muscles)verified
Alpha-Interferonnouna form of interferon that is produced endogenously and commercially for its pharmacological effects (including regulation of the immune system and antiviral and antineoplastic effects)verified
Alpha-Naphthol TestnounMWEbiochemical indicator of the presence of carbohydrates in a solutionverified