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Search Result for "cretaceous": 
Wordnet 3.0

NOUN (1)

1. from 135 million to 63 million years ago; end of the age of reptiles; appearance of modern insects and flowering plants;
[syn: Cretaceous, Cretaceous period]


ADJECTIVE (2)

1. abounding in chalk;

2. of or relating to or denoting the third period of the Mesozoic era;


The Collaborative International Dictionary of English v.0.48:

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
WordNet (r) 3.0 (2006):

cretaceous adj 1: abounding in chalk 2: of or relating to or denoting the third period of the Mesozoic era n 1: from 135 million to 63 million years ago; end of the age of reptiles; appearance of modern insects and flowering plants [syn: Cretaceous, Cretaceous period]