acanthopterygii acanthopterygian • Acanthopterygii · · · Info · Definitions · Characters · · acanthopterygii · · Text Latin · · Script 15 · · Length 7 · · Syllables Definitions · · · (noun) teleost fishes having fins with sharp bony rays. Synonyms: Acanthopterygii, superorder Acanthopterygii. · · Noun Definition 1 Characters · · a latin small letter a U+0061 c latin small letter c U+0063 e latin small letter e U+0065 g latin small letter g U+0067 h latin small letter h U+0068 i latin small letter i U+0069 n latin small letter n U+006E o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 t latin small letter t U+0074 y latin small letter y U+0079