Breadcrumb Home > Thesaurus > C Synonyms of cretaceous Find synonyms for: Noun 1. Cretaceous, Cretaceous period usage: from 135 million to 63 million years ago; end of the age of reptiles; appearance of modern insects and flowering plants Adjective 1. cretaceous usage: abounding in chalk 2. Cretaceous usage: of or relating to or denoting the third period of the Mesozoic era WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of cretaceous (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: parallax Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language