GALACTIC
astronomic, astronomical, galactic
(adjective) inconceivably large
galactic
(adjective) of or relating to a galaxy (especially our galaxy the Milky Way); “the galactic plane”
Source: WordNet® 3.1
Adjective
Galactic (not comparable)
pertaining to the Milky Way Galaxy
Etymology
Adjective
galactic (comparative more galactic, superlative most galactic)
(medicine) Of or pertaining to milk, or the secretion of milk.
Relating to a galaxy.
(astronomy, specifically) Relating to the Milky Way galaxy.
(figuratively) Enormous (in size or impact).
Hyponyms
• extragalactic
• intergalactic
• intragalactic
• transgalactic
Source: Wiktionary
Ga*lac"tic, a. Etym: [Gr. Galaxy, and cf. Lactic.]
1. Of or pertaining to milk; got from milk; as, galactic acid.
2. Of or pertaining to the galaxy or Milky Way. Galactic circle
(Astron.), the great circle of the heavens, to which the course of
the galaxy most nearly conforms. Herschel.
– Galactic poles, the poles of the galactic circle.
Source: Webster’s Unabridged Dictionary 1913 Edition