zy·go·ma (z?-g??m?, z?-)n. pl. zy·go·ma·ta (-m?-t?) or zy·go·mas 1. The zygomatic bone.2. The zygomatic arch.3. The zygomatic process.[New Latin zyg?ma, zyg?mat-, from Greek zug?ma, bolt, from zugoun, to join; see yeug- in Indo-European roots.]zy?go·mat?ic (-m?t??k) 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.zygomatic (?za?????mæt?k; ?z??-) adj1. (Anatomy) of or relating to the zygoma2. (Zoology) of or relating to the zygomaCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014zy?go?mat?ic (?za? g??mæt ?k, ?z?g ?-) adj. 1. of, pertaining to, or situated near the zygoma. n. 2. zygomatic bone. [1700?10] Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.