/ Dictionary / Index C caliph: Meaning and Definition of Find definitions for: ca•liph Pronunciation: (kā'lif, kal'if), [key] — n. a spiritual leader of Islam, claiming succession from Muhammad. any of the former Muslim rulers of Baghdad (until 1258) and of the Ottoman Empire (from 1571 until 1924). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: caliph (Thesaurus) caliper rule caliphate Related Content Daily Word Quiz: digression Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language