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menstrŭa: ōrum, v. menstruus.
mēnstrŭa,¹⁶ ōrum, n. (menstruus), menstrues : Lucr. 6, 796 ; Sall. H. 4, 90 ; Cels. Med. 6, 6, 38 ; Plin. 22, 65 || sing. menstruum [en parl. d’une femelle], Plin. 29, 98.