Ganoidei ganoidean • ganoidian · · · Info · Definitions · Characters · · Ganoidei · · Text Latin · · Script 8 · · Length Definitions · · · (noun) a group of mostly extinct primitive bony fishes characterized by armor-like bony scales. Synonyms: order Ganoidei. · · Noun Definition 1 Characters · · G latin capital letter g U+0047 a latin small letter a U+0061 d latin small letter d U+0064 e latin small letter e U+0065 i latin small letter i U+0069 n latin small letter n U+006E o latin small letter o U+006F