TETROXIDE Antonyms There are 2 antonyms of the word tetroxide. (opposite meanings)Did you mean?Definition of TETROXIDEBest Opposite Words For TETROXIDETop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1dioxidenoun, adjectiven, adj2monoxidenounn