menstruation
Meanings
noun
- The periodic discharging of the menses, the flow of blood and cells from the lining of the uterus in unfertilized females of humans and other primates.
- An instance of menstruation, the part of each month during which a fertile woman menstruates.
Pronunciation
Word forms
Etymology
From menstruum + -ation, modelled after Late Latin menstruatio. The word is a cognate with French menstruation, Spanish menstruación, which displaced Old English mōnaþblōd (literally “monthblood”).
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