/ Thesaurus / L Synonyms of lunar caustic Find synonyms for: Noun1. lunar caustic, silver nitrateusage: silver nitrate fused into sticks and formerly used as a causticWordNet 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