galactic

What it means

1. Relating to a galaxy.
   1. capitalizedsometimesspecificallyastronomyRelating to the Milky Way galaxy.

      Galactic astronomy is the study of the Milky Way.

      Synonyms: Galactic

2. figurativelyEnormous (in size or impact).

   “Yes, his heart is one of galactic proportions.”

   2007, Jeffrey P. Brown, Black Body Radiation and the Ultraviolet Catastrophe, page 128

   3 more examples

   The policies and decisions to be made were neither very complex nor very numerous, since at that time, the needs and priorities in Germany did not involve issues of galactic impact, […]

   1998, Mark Lynton, Accidental Journey: A Cambridge Intern's Memory of World War II

   For a fashion journal, there is a more important and more difficult judgement to make: Is the work of such galactic significance as to be eligible to grace the pages of this magnificent journal?

   1999, Jonathan Michael Wyndham Slack, Egg & ego: an almost true story of life in the biology lab, page 65

   The credit crunch became a mess of galactic proportions.

   2008, José D. Roncal, José N. Abbo, The Big Gamble: Are You Investing Or Speculating?, page 94

In a sentence

Galactic astronomy is the study of the Milky Way.

Where it comes from

1. Ancient Greekγαλακτικός“milky”
2. Englishgalactic

Borrowed from Ancient Greek γαλακτικός (galaktikós, “milky”), from γάλα (gála, “milk”). Doublet of galactico.