/ Thesaurus / C Synonyms of calcium carbonate Find synonyms for: Noun1. calcium carbonate, carbonateusage: a salt found in nature as chalk or calcite or aragonite or limestoneWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: reticent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language