[ap-uh-noo-roh-sis, -nyoo-]

noun, plural ap·o·neu·ro·ses [ap-uh-noo-roh-seez, -nyoo-] /ˌæp ə nʊˈroʊ siz, -nyʊ-/. Anatomy.

a whitish, fibrous membrane that connects a muscle to a bone or fascia.

Nearby words

  1. apomict,
  2. apomixis,
  3. apomorphine,
  4. aponeurectomy,
  5. aponeurorrhaphy,
  6. aponeurositis,
  7. aponeurotic fibroma,
  8. aponeurotomy,
  9. apopemptic,
  10. apophasis

Origin of aponeurosis

1670–80; < Greek aponeúrōsis the part of a muscle becoming a tendon, equivalent to aponeurō-, variant stem of aponeuroûn to change to tendon (see apo-, neuron) + -sis -sis

Related formsap·o·neu·rot·ic [ap-uh-noo-rot-ik, -nyoo-] /ˌæp ə nʊˈrɒt ɪk, -nyʊ-/, adjective

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for aponeurosis

British Dictionary definitions for aponeurosis


noun plural -ses (-siːz)

anatomy a white fibrous sheet of tissue by which certain muscles are attached to bones
Derived Formsaponeurotic (ˌæpənjʊəˈrɒtɪk), adjective

Word Origin for aponeurosis

C17: via New Latin from Greek, from aponeurousthai to change into a tendon, from neuron tendon

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for aponeurosis



1670s, from Latin, from Greek aponeurosis, from aponeuroein, from apo- "off, away from" (see apo-) + neuron "sinew" (see neuro-).

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for aponeurosis




A sheetlike fibrous membrane resembling a flattened tendon that serves as a fascia to bind muscles together or to connect muscle to bone.
Related formsap′o•neu•rotic (-rŏtĭk) adj.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.