ca·liph·ate (k??l?-f?t?, -f?t, k?l??-)n. The office or jurisdiction of a caliph. The last caliphate was held by Ottoman Turkish sultans until it was abolished by Kemal Atatürk in 1924.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.caliphate (?ke?l??fe?t; -f?t; ?kæl-) , califate or kalifaten (Islam) the office, jurisdiction, or reign of a caliphCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014cal?iph?ate (?kæl ??fe?t, -f?t, ?ke? l?-) n. the rank, jurisdiction, or government of a caliph. [1725?35] Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.