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.zygoma (za?????m?; z?-) n, pl -mata (-m?t?) 1. (Anatomy) another name for zygomatic arch2. (Zoology) another name for zygomatic arch[C17: via New Latin from Greek, from zugon yoke]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014zy?go?ma (za??go? m?, z?-) n., pl. -ma?ta (-m? t?) -mas. 1. zygomatic arch. 2. the zygomatic process of the temporal bone. 3. zygomatic bone. [1675?85;