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[ap-uh-noo-roh-sis, -nyoo-] /ˌæp ə nʊˈroʊ sɪs, -nyʊ-/
noun, plural aponeuroses
[ap-uh-noo-roh-seez, -nyoo-] /ˌæp ə nʊˈroʊ siz, -nyʊ-/ (Show IPA).
a whitish, fibrous membrane that connects a muscle to a bone or fascia.
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 forms
[ap-uh-noo-rot-ik, -nyoo-] /ˌæp ə nʊˈrɒt ɪk, -nyʊ-/ (Show IPA),
adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for aponeurosis
  • Where the muscular fibers are in a direct line with those of the tendon or aponeurosis, the two are directly continuous.
British Dictionary definitions for aponeurosis


noun (pl) -ses (-siːz)
(anatomy) a white fibrous sheet of tissue by which certain muscles are attached to bones
Derived Forms
aponeurotic (ˌæpənjʊəˈrɒtɪk) adjective
Word Origin
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
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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
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aponeurosis in Medicine

aponeurosis ap·o·neu·ro·sis (āp'ə-nu-rō'sĭs, -nyu-)
A sheetlike fibrous membrane resembling a flattened tendon that serves as a fascia to bind muscles together or to connect muscle to bone.

ap'o·neu·rot'ic (-rŏt'ĭk) adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia Article for aponeurosis

a flat sheet or ribbon of tendonlike material that anchors a muscle or connects it with the part that the muscle moves. The aponeurosis is composed of dense fibrous connective tissue containing fibroblasts (collagen-secreting spindle-shaped cells) and bundles of collagenous fibres in ordered arrays. Aponeuroses are structurally similar to tendons and ligaments.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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