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aponeurosis

[ap-uh-noo-roh-sis, -nyoo-]
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noun, plural ap·o·neu·ro·ses [ap-uh-noo-roh-seez, -nyoo-] /ˌæp ə nʊˈroʊ siz, -nyʊ-/. Anatomy.
  1. a whitish, fibrous membrane that connects a muscle to a bone or fascia.
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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. 2018

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British Dictionary definitions for aponeurosis

aponeurosis

noun plural -ses (-siːz)
  1. anatomy a white fibrous sheet of tissue by which certain muscles are attached to bones
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Derived Formsaponeurotic (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

Word Origin and History for aponeurosis

n.

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

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Online Etymology Dictionary, © 2010 Douglas Harper
aponeurosis in Medicine

aponeurosis

(ăp′ə-nu-rō′sĭs)
n.
  1. A sheetlike fibrous membrane resembling a flattened tendon that serves as a fascia to bind muscles together or to connect muscle to bone.
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Related formsap′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.