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quaternary 音标拼音: [kw'ɑtɚn,ɛri] a. 由四要素形成的 由四要素形成的 quaternary 四进制的 quaternary 四进 四元 quaternary adj 1: consisting of or especially arranged in sets of four; "quaternate leaves"; "a quaternary compound" [synonym: {quaternate}, {quaternary}] 2: coming next after the third and just before the fifth in position or time or degree or magnitude; "the quaternary period of geologic time extends from the end of the tertiary period to the present" [synonym: {fourth}, {4th}, {quaternary}] n 1: last 2 million years [synonym: {Quaternary}, {Quaternary period}, {Age of Man}] 2: the cardinal number that is the sum of three and one [synonym: {four}, {4}, {IV}, {tetrad}, {quatern}, {quaternion}, {quaternary}, {quaternity}, {quartet}, {quadruplet}, {foursome}, {Little Joe}] Quaternary \Qua*ter"na*ry\, n. [L. numerus quaternarius: cf. F. quaternaire.] 1. The number four. --Boyle. [1913 Webster] 2. (Geol.) The Quaternary age, era, or formation. See the Chart of {Geology}. [1913 Webster] Quaternary \Qua*ter"na*ry\, a. [L. quaternarius consisting of four each, containing four, fr. quaterni four each, fr. quattuor four: cf. F. quaternaire. See {Four}.] [1913 Webster] 1. Consisting of four; by fours, or in sets of four. [1913 Webster] 2. (Geol.) Later than, or subsequent to, the Tertiary; Post-tertiary; as, the Quaternary age, or Age of man. [1913 Webster] 41 Moby Thesaurus words for "quaternary": Little Joe, biquadrate, biquadratic, four, four-legged, four-part diaphony, four-rayed, foursome, foursquare, quad, quadrangle, quadrature, quadrennium, quadric, quadrilateral, quadrille, quadrinomial, quadrivalent, quadruped, quadruplet, quartet, quartic, quartile, quatern, quaternion, quaternity, quatrefoil, rectangle, square, square dance, squaring, tetractinal, tetrad, tetragon, tetragram, tetragrammaton, tetrahedron, tetralogy, tetraphony, tetrapody, tetravalent
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