1. (a.) Of or pertaining to milk; got from milk; as, galactic acid.

2. (a.) of or pertaining to the galaxy or Milky Way.

Cynthian Gargantuan all-comprehending all-comprehensive all-covering all-embracing all-encompassing all-filling all-including all-inclusive all-pervading allover amplitudinous anagalactic asteroidal astral astrologic astrologistic astrologous astronomic astronomical astrophysical awesome boundless bulky catholic celestial circumplanetary cislunar colossal cosmic cosmopolitan country-wide ecumenic empyreal empyrean enormous equinoctial extensive extragalactic gigantic global heaven-wide heavenly heliacal huge immeasurable immense infinite intercosmic international interplanetary intersidereal interstellar king-size large lunar lunary lunate lunular lunulate mammoth massive massy meteoric meteoritic monster monstrous monumental mountainous national nebular nebulose nebulous nondenominational nonsectarian outsize overgrown planetal planetarian planetary planetesimal prodigious semilunar sidereal sizable solar spacious sphery star-spangled star-studded starry stellar stellary stupendous terrestrial titanic total tremendous universal uranic vast voluminous weighty world-wide zodiacal