/ Dictionary / Index O Ogma: Meaning and Definition of Find definitions for: Og•ma Pronunciation: (og'mu), [key] — n. Irish Myth. a god of poetry and eloquence and the inventor of the ogham letters: one of the Tuatha De Danann. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Oglethorpe Ogmios Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language