Gen·ghis Khan (g?ng?g?s kän?, j?ng?-) or Jen·ghiz Khan (j?n?g?z kän?, j?ng?-) Originally Temujin. 1162?-1227. Mongol conqueror who united the Mongol tribes and forged an empire stretching from China to the Danube River and into Persia. In 1206 he took the name Genghis Khan (“supreme conqueror”).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.Genghis Khan (?d?????s k??n) n (Biography) original name Temuchin or Temujin. ?1162?1227, Mongol ruler, whose empire stretched from the Black Sea to the Pacific. Also: Jinghis Khan or Jenghis Khan Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014Gen?ghis Khan (?d??? g?s ?k?n or, often, ?g??-) n. 1162?1227, Mongol conqueror. Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.