/ Dictionary / Index A aponeurosis: Meaning and Definition of Find definitions for: ap•o•neu•ro•sis Pronunciation: (ap"u-noo-rō'sis, -nyoo-), [key] — pl. -ses a whitish, fibrous membrane that connects a muscle to a bone or fascia. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: aponeurosis (Thesaurus) apomorphine apopemptic Related Content Daily Word Quiz: kiln Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language