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menstruation

men·stru·a·tion

menstruation

 
pronunciation:
men stru eI shn
part of speech: noun
definition 1: the usu. periodic process of discharging blood, mucus, and dead cells from the mammalian uterus when the egg is not fertilized.
similar words:
period
definition 2: the period during which this discharge occurs, in the human female usu. four to five days at monthly intervals.
similar words:
curse, period
derivation: menstruous (adj.)