Breadcrumb Home > Thesaurus > S Synonyms of superoxide Find synonyms for: Noun 1. superoxide, oxide usage: a metallic oxide containing the univalent anion O2- 2. superoxide, superoxide anion, anion usage: the univalent anion O2-; "much of the O2 supporting cellular respiration is reduced to the superoxide anion O2-" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of superoxide (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: occultation Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language