imperforate hymen imperforated • imperforation · · · Info · Definitions · Characters · · imperforate hymen · · Text Common · · Latin · · Scripts 17 · · Length 6 · · Syllables Definitions · · · (noun) hymen that is completely closed so that menstrual blood cannot flow out. Synonyms: imperforate hymen. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 f latin small letter f U+0066 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 o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 t latin small letter t U+0074 y latin small letter y U+0079