- menstruation (n.)
[menstruation 词源字典]
- 1680s, from Late Latin menstruare, from menstruus "monthly" (see menstrual) + -ation. Old English equivalent was monaðblot "month-blood." Middle English had menstrue (n.), late 14c., from Old French menstrue, from Latin menstruum.[menstruation etymology, menstruation origin, 英语词源]