Dipnoi dipnoi • dipnoid · · · Info · Definitions · Characters · · Dipnoi · · Text Latin · · Script 6 · · Length 2 · · Syllables Definitions · · · (noun) bony fishes of the southern hemisphere that breathe by a modified air bladder as well as gills; sometimes classified as an order of Crossopterygii. Synonyms: subclass Dipnoi. · · Noun Definition 1 Characters · · D latin capital letter d U+0044 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