ap·o·neu·ro·sis 
(ăp′ə-n-rōsĭs, -ny-)
(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.