Etymograph

English

innerbrain

From inner + brain.

A compound of inner + brain

Proto-Indo-European *h₁én ‘in’

…

Proto-West Germanic *in ‘in’

Old English in ‘in’

Old English innera ‘inner’

Middle English inner

English inner

Proto-Germanic *bragną

Proto-West Germanic *bragn

Old English bræġn ‘brain’

Middle English brayn ‘brain’

English brain

Today it means

noun Structures located deep within the brain, particularly those involved in emotions and memory.

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

Etymograph / innerbrain