Origin: Anc Greek
από/apo(=off, away from)
νεύρον/nevron(=neuron) > νευρά/nevra (=cutgut) (νεαρόν (α>υ)/nearon (=young) because catgut were made from intestines of young animals.
-οσις/-osis/(=suffix expressing state or condition, in medical terminology denoting "a state of disease)
Aponeurosis are layers of flat broad tendons that serves as a fascia to bind muscles together or to connect it with the part that the muscle moves.