[ap-uh-noo-roh-sis, -nyoo-]
noun, plural aponeuroses [ap-uh-noo-roh-seez, -nyoo-] . Anatomy.
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

aponeurotic [ap-uh-noo-rot-ik, -nyoo-] , adjective
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World English Dictionary
aponeurosis (ˌæpənjʊəˈrəʊsɪs)
n , pl -ses
anatomy a white fibrous sheet of tissue by which certain muscles are attached to bones
[C17: via New Latin from Greek, from aponeurousthai to change into a tendon, from neuron tendon]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Word Origin & History

1670s, from L., from Gk. aponeurosis, from aponeuroein, from apo- "off, away from" + neuron "sinew."
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

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
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Encyclopedia Britannica


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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Example sentences
Where the muscular fibers are in a direct line with those of the tendon or aponeurosis, the two are directly continuous.
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