thalmencephalon thallus • thalposis · · · Info · Definitions · Synonyms · Characters · · thalmencephalon · · Text Latin · · Script 15 · · Length 5 · · Syllables Definitions · · · (noun) the posterior division of the forebrain; connects the cerebral hemispheres with the mesencephalon. Synonyms: diencephalon, interbrain, betweenbrain. · · Noun Definition 1 Synonyms · · · diencephalon · · Synonym 1 interbrain · · Synonym 2 betweenbrain · · Synonym 3 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 l latin small letter l U+006C m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F p latin small letter p U+0070 t latin small letter t U+0074