/ Thesaurus / V Synonyms of volcanic crater Find synonyms for: Noun1. volcanic crater, crater, geological formation, formationusage: a bowl-shaped geological formation at the top of a volcanoWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: rotund Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language