/ Dictionary / Index T Theodosius II: Meaning and Definition of Find definitions for: Theodosius II Pronunciation: [key] a.d.401–450, emperor of the Eastern Roman Empire 408–450. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Theodosius I theogony Related Content Daily Word Quiz: anecdote Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language