hypanthium hypanthial • hypantrum · · · Info · Definitions · Synonyms · Characters · · hypanthium · · Text Latin · · Script 10 · · Length 4 · · Syllables Definitions · · · (noun) the cuplike or ringlike or tubular structure of a flower which bears the sepals and stamens and calyx (as in Rosaceae). Synonyms: floral cup, calyx tube. · · Noun Definition 1 Synonyms · · · floral cup · · Synonym 1 calyx tube · · Synonym 2 Characters · · a latin small letter a U+0061 h latin small letter h U+0068 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E p latin small letter p U+0070 t latin small letter t U+0074 u latin small letter u U+0075 y latin small letter y U+0079