/ Thesaurus / H Synonyms of hydrated oxide Find synonyms for: Noun1. hydroxide, hydrated oxide, compound, chemical compoundusage: a compound of an oxide with waterWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: exemplary Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language