triavil triatomicity • triaxial · · · Info · Definitions · Synonyms · Characters · · triavil · · Text Latin · · Script 7 · · Length 3 · · Syllables Definitions · · · (noun) tranquilizer and antidepressant (trade name Triavil) sometimes used as an antiemetic for adults. Synonyms: perphenazine, Triavil. · · Noun Definition 1 Synonyms · · · perphenazine · · Synonym 1 Characters · · a latin small letter a U+0061 i latin small letter i U+0069 l latin small letter l U+006C r latin small letter r U+0072 t latin small letter t U+0074 v latin small letter v U+0076