/ Dictionary / Index O odeum: Meaning and Definition of Find definitions for: o•de•um Pronunciation: (ō-dē'um), [key] — pl. o•de•a a hall, theater, or other structure for musical or dramatic performances. (in ancient Greece and Rome) a roofed building for musical performances. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Odette odic Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language