/ Thesaurus / T Synonyms of triassic period Find synonyms for: Noun1. Triassic, Triassic periodusage: from 230 million to 190 million years ago; dinosaurs, marine reptiles; volcanic activityWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: diaphanous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language