propriospinal
/ˌprəʊprɪəʊˈspʌɪnl/Anatomy
adjective
Belonging exclusively or especially to the spinal cord; specifically designating, relating to, or involving nerve cells or fibres that connect different segments of the spinal cord.
Origin
Early 20th century; earliest use found in Charles Sherrington (1857–1952), physiologist. From classical Latin proprius proper + -o- + spinal.