English word tectospinal comes from English spinal, English tecto- (Tectonic. Tectum.)

Detailed word origin of tectospinal

Dictionary entry	Language	Definition
spinal	English (eng)	(of a frog, or other experimental animal) Having a pithed brain, but an intact spinal cord.. Of or relating to the spine.
tecto-	English (eng)	Tectonic. Tectum.
tectospinal	English (eng)	(anatomy) Relating to, or connecting the mesencephalic tectum and the spinal cord.

Words with the same origin as tectospinal