Quaternary era

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• quaternary — [kwät′ər ner΄ē, kwə tʉr′nə rē] adj. [L quaternarius < quaterni, four together, four each < quater, four times < base of quattuor,FOUR] 1. consisting of four; in sets of four 2. [usually Q ] designating or of the second and current… …   English World dictionary

• 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] …   The Collaborative International Dictionary of English

• quaternary — ► ADJECTIVE 1) fourth in order or rank. 2) (Quaternary) Geology relating to the most recent period in the Cenozoic era, from about 1.64 million years ago to the present. ORIGIN Latin quaternarius, from quater four times …   English terms dictionary

• quaternary — /kwot euhr ner ee, kweuh terr neuh ree/, adj., n., pl. quaternaries. adj. 1. consisting of four. 2. arranged in fours. 3. (cap.) Geol. noting or pertaining to the present period of earth history, forming the latter part of the Cenozoic Era,… …   Universalium

• Quaternary extinction event — Late Pleistocene landscape of northern Eurasia The Quaternary period saw the extinctions of numerous predominantly larger, especially megafaunal, species, many of which occurred during the transition from the Pleistocene to the Holocene epoch.… …   Wikipedia

• Quaternary glaciation — The Ice Age redirects here. For other uses, see Ice age (disambiguation). Last ice age redirects here. This term is also used for the last glacial period of the Quaternary glaciation. Northern Hemisphere glaciation during the Last Glacial Maximum …   Wikipedia

• Quaternary — The Quaternary Period is the geologic time period after the Neogene Period roughly 2.588 million years ago to the present. The Quaternary includes two geologic epochs: the Pleistocene including Gelasian, that used to belong to the Pliocene and… …   Wikipedia

• Quaternary Period — Interval of geologic time, 1. 8 million years ago to the present. The Quaternary follows the Tertiary Period and is the more recent of the two periods of the Cenozoic Era. The Quaternary is subdivided into the Pleistocene Epoch and the Holocene… …   Universalium

• Quaternary — adj. & n. adj. 1 having four parts. 2 (Quaternary) Geol. of or relating to the most recent period in the Cenozoic era with evidence of many species of present day plants and animals (cf. PLEISTOCENE, HOLOCENE). Usage: Cf. Appendix II. n. (pl.… …   Useful english dictionary

• quaternary — adj. & n. adj. 1 having four parts. 2 (Quaternary) Geol. of or relating to the most recent period in the Cenozoic era with evidence of many species of present day plants and animals (cf. PLEISTOCENE, HOLOCENE). Usage: Cf. Appendix II. n. (pl.… …   Useful english dictionary

• quaternary — [kwə tə:n(ə)ri] adjective 1》 fourth in order or rank. 2》 (Quaternary) Geology relating to or denoting the most recent period in the Cenozoic era, following the Tertiary period (comprising the Pleistocene and Holocene epochs and beginning 1.64… …   English new terms dictionary