English

intragalactic

From intra- + galactic.

Proto-Indo-European *h₁én ‘in’

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

Latin *interus

Latin intrā ‘within’

Ancient Greek γάλα ‘milk’

Ancient Greek γαλακτικός ‘milky’

Today it means

adj Occurring between two or more points within a galaxy.

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

Etymograph / intragalactic