D defs.my
Entry 2 senses Webster, 1913

Galactic

/gəl-ăk'-tĭk/ · Ga·lac·tic · IPA /ɡəˈlæktɪk/
01 a. Of or pertaining to milk; got from milk; as, galactic acid.
  1. 1.
    Of or pertaining to milk; got from milk; as, galactic acid.
  2. 2.
    Of or pertaining to the galaxy or Milky Way.
Phrases & compounds
Galactic circle — the great circle of the heavens, to which the course of the galaxy most nearly conforms.
Galactic poles — the poles of the galactic circle.