/ Thesaurus / O Synonyms of oz. Find synonyms for: Noun1. ounce, oz., avoirdupois unitusage: a unit of weight equal to one sixteenth of a pound or 16 drams or 28.349 gramsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: philanthropy Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language