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单词 Cretaceous
释义

Cretaceous

adjective

Cre·​ta·​ceous kri-ˈtā-shəs How to pronounce Cretaceous (audio)
: of, relating to, or being the last period of the Mesozoic era characterized by continued dominance of reptiles, emergent dominance of angiosperms, diversification of mammals, and the extinction of many types of organisms at the close of the period
also : of, relating to, or being the corresponding system of rocks see Geologic Time Table
Cretaceous noun

Word History

Etymology

Latin cretaceus resembling chalk, from creta chalk

First Known Use

1832, in the meaning defined above

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更新时间:2024/11/14 9:11:10