/ Thesaurus / F Synonyms of ferric oxide Find synonyms for: Noun1. ferric oxide, oxideusage: a red oxide of ironWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language