cretaceous

[ kri-tey-shuhs ]

/ krɪˈteɪ ʃəs /

adjective

resembling or containing chalk.

(initial capital letter)Geology. 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.

noun

(initial capital letter)Geology. the Cretaceous Period or System.

Origin of cretaceous

1665–70; <Latin crētāceus, equivalent to crēt(a) chalk, clay (cf. crayon) + -āceus-aceous; the geological period was defined from the chalk beds of SE England and associated formations

OTHER WORDS FROM cretaceous

cre·ta·ceous·ly, adverbnon·cre·ta·ceous, adjectivepost·cre·ta·ceous, adjectivesu·per·cre·ta·ceous, adjective

Words nearby cretaceous

crest rail, CREST syndrome, Crestwood, cresyl, cresylic, cretaceous, Cretan, Cretan bull, Crete, cretic, cretin

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for cretaceous

Species much like Rhinobatus occur in the Cretaceous and Eocene.
A Guide to the Study of Fishes, Volume 1 (of 2)|David Starr Jordan
There are some very remarkable instances of this in the Cretaceous deposits.
Atlantic Monthly, Vol. 12, August, 1863, No. 70|Various
The Mesozoic time certainly terminated with the Cretaceous, and what follows belongs to a distinct aeon.
The Story of the Earth and Man|J. W. Dawson
The great volcanic outbursts which produced this trap commenced in the Cretaceous period and lasted on into the Eocene period.
Encyclopaedia Britannica, 11th Edition, Volume 14, Slice 4|Various

Showers of milk are explained by cretaceous matter carried into the air by whirlwinds.
A World of Wonders|Various

British Dictionary definitions for cretaceous (1 of 2)

cretaceous

/ (krɪˈteɪʃəs) /

adjective

consisting of or resembling chalk

Derived forms of cretaceous

cretaceously, adverb

Word Origin for cretaceous

C17: from Latin crētāceus, from crēta, literally: Cretan earth, that is, chalk

British Dictionary definitions for cretaceous (2 of 2)

Cretaceous

/ (krɪˈteɪʃəs) /

adjective

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

noun

the Cretaceous the Cretaceous period or rock system

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for cretaceous

Cretaceous

[ krĭ-tā′shəs ]

The third and last period of the Mesozoic Era, from about 144 to 65 million years ago. During this time the supercontinent Pangaea continued to split up, with modern-day South America and Africa splitting apart, the Atlantic Ocean widening, and India disconnecting itself entirely from the other landmasses to which it was attached. Dinosaurs continued to be the dominant terrestrial animals, but many insect groups, modern mammals and birds, and the angiosperms (flowering plants) also first appeared. The Cretaceous Period ended with a mass extinction event in which about 75 percent of all species, including marine, freshwater, and terrestrial organisms, became extinct. See Chart at geologic time.

单词	cretaceous
释义	cretaceous [ kri-tey-shuhs ] / krɪˈteɪ ʃəs / adjective resembling or containing chalk. (initial capital letter)Geology. 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. noun (initial capital letter)Geology. the Cretaceous Period or System. Origin of cretaceous 1665–70; <Latin crētāceus, equivalent to crēt(a) chalk, clay (cf. crayon) + -āceus-aceous; the geological period was defined from the chalk beds of SE England and associated formations OTHER WORDS FROM cretaceous cre·ta·ceous·ly, adverbnon·cre·ta·ceous, adjectivepost·cre·ta·ceous, adjectivesu·per·cre·ta·ceous, adjective Words nearby cretaceous crest rail, CREST syndrome, Crestwood, cresyl, cresylic, cretaceous, Cretan, Cretan bull, Crete, cretic, cretin Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for cretaceous Species much like Rhinobatus occur in the Cretaceous and Eocene. A Guide to the Study of Fishes, Volume 1 (of 2)\|David Starr Jordan There are some very remarkable instances of this in the Cretaceous deposits. Atlantic Monthly, Vol. 12, August, 1863, No. 70\|Various The Mesozoic time certainly terminated with the Cretaceous, and what follows belongs to a distinct aeon. The Story of the Earth and Man\|J. W. Dawson The great volcanic outbursts which produced this trap commenced in the Cretaceous period and lasted on into the Eocene period. Encyclopaedia Britannica, 11th Edition, Volume 14, Slice 4\|Various Showers of milk are explained by cretaceous matter carried into the air by whirlwinds. A World of Wonders\|Various British Dictionary definitions for cretaceous (1 of 2) cretaceous / (krɪˈteɪʃəs) / adjective consisting of or resembling chalk Derived forms of cretaceous cretaceously, adverb Word Origin for cretaceous C17: from Latin crētāceus, from crēta, literally: Cretan earth, that is, chalk British Dictionary definitions for cretaceous (2 of 2) Cretaceous / (krɪˈteɪʃəs) / adjective 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 noun the Cretaceous the Cretaceous period or rock system Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Scientific definitions for cretaceous Cretaceous [ krĭ-tā′shəs ] The third and last period of the Mesozoic Era, from about 144 to 65 million years ago. During this time the supercontinent Pangaea continued to split up, with modern-day South America and Africa splitting apart, the Atlantic Ocean widening, and India disconnecting itself entirely from the other landmasses to which it was attached. Dinosaurs continued to be the dominant terrestrial animals, but many insect groups, modern mammals and birds, and the angiosperms (flowering plants) also first appeared. The Cretaceous Period ended with a mass extinction event in which about 75 percent of all species, including marine, freshwater, and terrestrial organisms, became extinct. See Chart at geologic time. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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