Galactic

galactic
    adj 1: of or relating to a galaxy (especially our galaxy the
           Milky Way); "the galactic plane"
    2: inconceivably large [syn: {astronomic}, {astronomical},
       {galactic}]
    

Galactic \Ga*lac"tic\, a. [Gr. ? milky, fr. ?, ?, milk. See
   {Galaxy}, and cf. {Lactic}.]
   1. Of or pertaining to milk; got from milk; as, galactic
      acid.
      [1913 Webster]

   2. Of or pertaining to the galaxy or Milky Way.
      [1913 Webster]

   {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.
      [1913 Webster]
    

106 Moby Thesaurus words for "galactic":
      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