ap·o·neu·ro·sis (ăp′ə-n-rōsĭs, -ny-)
n. pl. ap·o·neu·ro·ses (-sēz′)
A sheetlike fibrous membrane, resembling a flattened tendon, that serves as a fascia to bind muscles together or as a means of connecting muscle to bone.
[Greek aponeurōsis, from aponeurousthai, to become tendinous : apo-, apo- + neuron, sinew; see (s)neəu- in the Appendix of Indo-European roots.]
ap′o·neu·rotic (-rŏtĭk) adj.
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Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.