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

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

noun plural -ses (-siːz)

  1. anatomy a white fibrous sheet of tissue by which certain muscles are attached to bones

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


  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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