Dictionary 1. (a.) Coming or made twice in a month; as, semimonthly magazine; a semimonthly payment.2. (n.) Something done or made every half month; esp., a semimonthly periodical. 3. (adv.) In a semimonthly manner; at intervals of half a month. Thesaurus annual biannual biennial bimonthly biweekly catamenial centenary centennial daily decennial diurnal fortnightly hebdomadal hourly menstrual momentary momently monthly quarterly quotidian secular semestral semiannual semiweekly semiyearly tertian triennial weekly yearly |