eutheria euthenist • Eutheria · · · Info · Definitions · Characters · · eutheria · · Text Latin · · Script 8 · · Length 5 · · Syllables Definitions · · · (noun) all mammals except monotremes and marsupials. Synonyms: Eutheria, subclass Eutheria. · · Noun Definition 1 Characters · · a latin small letter a U+0061 e latin small letter e U+0065 h latin small letter h U+0068 i latin small letter i U+0069 r latin small letter r U+0072 t latin small letter t U+0074 u latin small letter u U+0075