menstrualyoudaoicibaDictYouDict[menstrual 词源字典]
menstrual: [14] Etymologically, menstrual means ‘monthly’. It comes from Latin mēnstruālis, an adjective derived from mēnsis ‘month’ (a close relative of English month). From the same source comes menses [16], originally the plural of Latin mēnsis, and menopause [19] is based on the related Greek word for ‘month’, mén. Their gynaecological application comes, of course, from the ‘monthly’ flow of blood from the uterus.
=> menopause, month[menstrual etymology, menstrual origin, 英语词源]
menstrual (adj.)youdaoicibaDictYouDict
late 14c., "pertaining to menses," also (in astronomy) "monthly," from Old French menstruel, from Latin menstrualis "monthly," especially "of or having monthly courses," from menstruus "of a month, every month, monthly, pertaining to a month," from mensis "month" (see moon (n.)).