English

intraspinal

From intra- + spinal.

Proto-Indo-European *h₁én ‘in’

Proto-Indo-European *h₁énteros ‘inside, within’

Latin *interus

Latin intrā ‘within’

Proto-Indo-European *spey- ‘sharp point’

Proto-Italic *speinā ‘thorn’

Latin spīna ‘a prickle, spine’

Late Latin spīnālis ‘of or belonging to the spine’

Today it means

adj Within the spinal column (especially within the spinal canal)

Language periods are conventional ranges, not dates for this word.

Etymograph / intraspinal