rhy·ti·dec·to·my (r?t??-d?k?t?-m?)n. pl. rhy·ti·dec·to·mies See face-lift.[Greek rhutis, rhutid-, wrinkle + -ectomy.]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.rhytidectomy (?r?t??d?kt?m?) n, pl -miesa cosmetic surgical operation that tightens sagging skin and smooths unwanted wrinkles on the face; faceliftCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014rhyt?i?dec?to?my (?r?t ??d?k t? mi) n., pl. -mies. face-lift. [1930?35;