/ Dictionary / Index A Alexander IV: Meaning and Definition of Find definitions for: Alexander IV Pronunciation: [key] (Rinaldo Conti) died 1261, Italian ecclesiastic: pope 1254–61. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Alexander III Alexander V Related Content Daily Word Quiz: dissonant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language