/ Dictionary / Index A Alexius I: Meaning and Definition of Find definitions for: A•lex•i•us I Pronunciation: (u-lek'sē-us), [key] — (Alexius Comnenus) 1048–1118, emperor of the Byzantine Empire 1081–1118. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. alexithymia aleyard Related Content Daily Word Quiz: labyrinth Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language