denidation

English

Noun

denidation (uncountable)

1. The breakup and expulsion of the endometrium during menstruation.
   • 1894, Walter Heape, “The Menstruation of Semnopithecus entellus”, in Philosophical Transactions of the Royal Society of London, volume 185:

     Finally, he [Aveling] believes that menstruation is probably determined by the act of “denidation,” as he calls it, because it is from the denided surface that the menstrual flow comes.