1. Recurring once a month; monthly; gone through in a month; as, the menstrual revolution of the moon; pertaining to monthly changes; as, the menstrual equation of the sun's place.

2. Of or pertaining to the menses; as, menstrual discharges; the menstrual period.

3. Of or pertaining to a menstruum. Bacon.

MENSTRUANT Men"stru*ant, a. Etym: [L. menstruans, p. pr. of menstruare to have a monthly term, fr. menstruus. See Menstruous.]

Defn: Subject to monthly flowing or menses.

MENSTRUATE
Men"stru*ate, a.

Defn: Menstruous. [Obs.]

MENSTRUATE
Men"stru*ate, v. i. [imp. & p. p. Menstruated; p. pr. & vb. n.
Menstruating.]

Defn: To discharge the menses; to have the catamenial flow.

MENSTRUATION
Men`stru*a"tion, n.