hyracotherium hyracotherian • hyrax · · · Info · Definitions · Characters · · hyracotherium · · Text Latin · · Script 13 · · Length 6 · · Syllables Definitions · · · (noun) extinct horse genus; formerly called eohippus. Synonyms: Hyracotherium, genus Hyracotherium. · · 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 h latin small letter h U+0068 i latin small letter i U+0069 m latin small letter m U+006D o latin small letter o U+006F r latin small letter r U+0072 t latin small letter t U+0074 u latin small letter u U+0075 y latin small letter y U+0079