Ak·ka·di·an (?-k??d?-?n)n.1. A native or inhabitant of ancient Akkad.2. The Semitic language of Mesopotamia. Also called Assyrian.Ak·ka?di·an adj.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.Akkadian (??kæd??n; ??ke?-) or Accadiann1. (Peoples) a member of an ancient Semitic people who lived in central Mesopotamia in the third millennium bc2. (Languages) the extinct language of this people, belonging to the E Semitic subfamily of the Afro-Asiatic familyadj (Historical Terms) of or relating to this people or their languageCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014Ak?ka?di?an or Ac?ca?di?an (??ke? di ?n, ??k?-) n. 1. an extinct eastern Semitic language of Assyria and Babylonia, written in a cuneiform syllabary borrowed from Sumerian. 2. a native or inhabitant of Akkad. adj. 3. of or pertaining to the language Akkadian. 4. of or pertaining to Akkad or its inhabitants. Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.