/ Dictionary / Index C Constantine XI Palaeologus: Meaning and Definition of Find definitions for: Constantine XI Pa•lae•ol•o•gus Pronunciation: (pā"lē-ol'u-gus, pal"ē-), [key] — (Dragases) 1404–53, last Byzantine emperor 1449–53. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Constantine II Constantinople Related Content Daily Word Quiz: fresco Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language