os·te·ot·o·my (?s?t?-?t??-m?)n. pl. os·te·ot·o·mies Surgical division or sectioning of bone.os?te·ot?o·mist n.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.osteotomy (??st???t?m?) n, pl -mies (Surgery) the surgical cutting or dividing of bone, usually to correct a deformityCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014os?te?ot?o?my (??s ti??t ? mi) n., pl. -mies. 1. the surgical division of a bone to reposition the ends. 2. the excision of part of a bone. [1835?45] os`te?ot?o?mist, n. Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.osteotomy1. the dissection or anatomy of bones.2. the cutting of bones as part of a surgical operation. ? osteotomist, n.See also: Bones1. the dissection or anatomy of bones.2. the cutting of bones as part of a surgical operation. ? osteotomist, n.See also: Surgery-Ologies & -Isms. Copyright 2008 The Gale Group, Inc. All rights reserved.