/ Thesaurus / C Synonyms of cyanic acid Find synonyms for: Noun1. cyanic acid, acidusage: a colorless poisonous volatile liquid acid that hydrolyzes readily to ammonia and carbon dioxideWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: quandary Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language