Origin: 1350–1400; Middle English caliphe, califfe < Middle French < Medieval Latin calipha < Arabic khalīf(a) successor (of Muhammad), derivative of khalafa succeed
late 14c., from O.Fr. caliphe (12c., also algalife), from M.L. califa, from Arabic khalifa "successor," originally Abu-Bakr, who succeeded Muhammad in the role of leader of the faithful after the prophet's death.