Dictionary 1. (a.) 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. (a.) of or pertaining to the menses; as, menstrual discharges; the menstrual period. 3. (a.) of or pertaining to a menstruum. Thesaurus annual biannual biennial bimonthly biweekly catamenial centenary centennial daily decennial diurnal fortnightly hebdomadal hourly momentary momently monthly quarterly quotidian secular semestral semiannual semimonthly semiweekly semiyearly tertian triennial weekly yearly |