1. of or relating to a galaxy.
  2. of or relating to the Milky Way.
immense; huge; vast: a problem of galactic proportions.
Physiology. pertaining to or stimulating the secretion of milk.

Origin of galactic

First recorded in 1830–40, galactic is from the Greek word galaktikós milky. See galact-, -ic
Related formsnon·ga·lac·tic, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for galactic

astronomical, cosmic, heavenly, astrological

Examples from the Web for galactic

Contemporary Examples of galactic

Historical Examples of galactic

  • Three of them were still in the uniform of the Galactic Guards.

    Happy Ending

    Fredric Brown

  • The beams of light glistened off the spire of the Galactic cache.

    Warrior Race

    Robert Sheckley

  • He was using a protractor, which was divided into Galactic degrees.

    The Players

    Everett B. Cole

  • There were only two alternatives: the Empire or Galactic anarchy.

    Ministry of Disturbance

    Henry Beam Piper

  • He turned and glared at Faress; professors do not glare at galactic emperors.

    Ministry of Disturbance

    Henry Beam Piper

British Dictionary definitions for galactic



astronomy of or relating to a galaxy, esp the Galaxythe galactic plane
med of or relating to milk

Word Origin for galactic

C19: from Greek galaktikos; see galaxy
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for galactic

1839, "of the Milky Way," from Late Latin galacticus, from galaxias (see galaxy). In modern scientific sense "pertaining to (our) galaxy," from 1849.

Online Etymology Dictionary, © 2010 Douglas Harper

galactic in Medicine




Relating to milk.
Promoting the flow of milk.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.