therapsida therapsid • Therapsida · · · Info · Definitions · Characters · · therapsida · · Text Latin · · Script 10 · · Length 4 · · Syllables Definitions · · · (noun) extinct mammal-like reptiles found inhabiting all continents from the mid Permian to late Triassic. Synonyms: Therapsida, order Therapsida. · · Noun Definition 1 Characters · · a latin small letter a U+0061 d latin small letter d U+0064 e latin small letter e U+0065 h latin small letter h U+0068 i latin small letter i U+0069 p latin small letter p U+0070 r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074