/ Dictionary / Index S semimonthly: Meaning and Definition of Find definitions for: sem•i•month•ly Pronunciation: (sem"ē-munth'lē, sem"ī-), [key] — adj., n., pl. adv. -lies, —adj. made, occurring, done, or published twice a month. —n. something occurring every half month or twice a month. a semimonthly publication. —adv. twice a month: We went semimonthly to see her. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: semimonthly (Thesaurus) semiminor axis seminal Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language