The·od·o·ric (th?-?d??r-?k) Known as “the Great.” ad 454?-526. King of the Ostrogoths (c. 474-526) who invaded Italy, killed Odoacer, and founded the Ostrogoth kingdom in Italy (493).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.Theodoric (????d?r?k) or Theodericn (Biography) called the Great. ?454?526 ad, king of the Ostrogoths and founder of the Ostrogothic kingdom in Italy after his murder of Odoacer (493)Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014The?od?o?ric (?i??d ? r?k) n. A.D. 454??526, king of the Ostrogoths: ruler of Italy 493?526. Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.