Cretaceous Cre*ta"ceous (kr[-e]*t[=a]"sh[u^]s), a. [L. cretaceus, fr. creta chalk. See {Crayon}.] 1. Having the qualities of chalk; abounding with chalk; chalky; as, cretaceous rocks and formations. See {Chalk}. [1913 Webster]

2. (Geol.) Of, pertaining to, or designating, the period of time following the Jurassic and preceding the Tertiary, generally given as from 144 million years b. p. to 65 million years b. p.. Also called

The Collaborative International Dictionary of English. 2000.

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  • Cretaceous — Period 145.5–65.5 million years ago …   Wikipedia

  • cretaceous — [kri tā′shəs, krētā′shəs] adj. [L cretaceus < creta: see CRAYON] 1. Now Rare containing, composed of, or having the nature of, chalk 2. [usually C ] designating or of the third and last geologic period of the Mesozoic Era, characterized by the …   English World dictionary

  • cretaceous — 1670s, adj., chalky, from L. cretaceus chalk like, from creta chalk. As a geological period (with a capital C ), it was first used 1832. The extensive chalk beds of southeastern England were laid down during the Cretaceous …   Etymology dictionary

  • Cretaceous — ► ADJECTIVE ▪ relating to the last period of the Mesozoic era (between the Jurassic and Tertiary periods, about 146 to 65 million years ago), at the end of which dinosaurs and many other organisms died out. ORIGIN from Latin creta chalk …   English terms dictionary

  • Cretaceous — /krəˈteɪʃəs / (say kruh tayshuhs) Geology –adjective 1. of or relating to the third and latest of the periods included in the Mesozoic era. –noun 2. Also, Cretaceous era. the Cretaceous period. 3. the system of strata deposited during the… …  

  • Cretaceous — adjective Etymology: Latin cretaceus resembling chalk, from creta chalk Date: 1832 of, relating to, or being the last period of the Mesozoic era characterized by continued dominance of reptiles, emergent dominance of angiosperms, diversification… …   New Collegiate Dictionary

  • cretaceous — cretaceously, adv. /kri tay sheuhs/, adj. 1. resembling or containing chalk. 2. (cap.) Geol. noting or pertaining to a period of the Mesozoic Era, from 140 million to 65 million years ago, characterized by the greatest development and subsequent… …   Universalium

  • Cretaceous — noun The geologic period within the Mesozoic era that comprises lower and upper epochs from about 146 to 65 million years ago As with the Lejeuneaceae, this pattern of massive speciation appears to be correlated with the Cretaceous explosion of… …   Wiktionary

  • Cretaceous — Cre|ta|ceous [krıˈteıʃəs] adj [Date: 1600 1700; : Latin; Origin: cretaceus, from creta chalk ] the Cretaceous period was the time long ago when rocks containing ↑chalk were formed …   Dictionary of contemporary English

  • cretaceous — cre·ta·ceous || krɪ teɪʃəs adj. chalky; like chalk; pertaining to the Cretaceous era (Geology) …   English contemporary dictionary

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