English

intracranium

From intra- + cranium.

Proto-Indo-European *h₁én ‘in’

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

Latin *interus

Latin intrā ‘within’

Proto-Indo-European *ḱerh₂-

Ancient Greek κρᾱνίον ‘skull’

Medieval Latin crānium ‘skull’

Today it means

noun The interior of the cranium

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

Etymograph / intracranium