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WordReference Random House Unabridged Dictionary of American English © 2024cre•ta•ceous (kri tā′shəs),USA pronunciation adj. - resembling or containing chalk.
- Geology(cap.) 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 extinction of dinosaurs and the advent of flowering plants and modern insects. See table under geologic time.
n. - Geology(cap.) the Cretaceous Period or System.
- Latin crētāceus, equivalent. to crēt(a) chalk, clay (compare crayon) + -āceus -aceous; the geological period was defined from the chalk beds of SE England and associated formations
- 1665–70
Collins Concise English Dictionary © HarperCollins Publishers:: cretaceous /krɪˈteɪʃəs/ adj - consisting of or resembling chalk
Etymology: 17th Century: from Latin crētāceus, from crēta, literally: Cretan earth, that is, chalk Collins Concise English Dictionary © HarperCollins Publishers:: Cretaceous /krɪˈteɪʃəs/ adj - of, denoting, or formed in the last period of the Mesozoic era, between the Jurassic and Tertiary periods, lasting 80 million years during which chalk deposits were formed and flowering plants first appeared
n - the Cretaceous ⇒ the Cretaceous period or rock system
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