Definition of "galactic" [ga•lac•tic]

  • Of or relating to a galaxy, especially the Milky Way. (adjective)
  • Of enormous size; immense. (adjective)
  • Of, relating to, or causing the secretion of milk. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "galactic" in a sentence
  • "This method of using the chemical composition, age and mass of stars to unravel the history of the galaxy is sometimes called galactic archaeology and instruments like the E-ELT would lead the way in such research."
  • "There is little evidence for a connection between solar activity (as inferred from trends in galactic cosmic rays) and recent global warming."
  • "Their lives mix and intertwine throughout the following years to a climax that rivals anything by Stephen Baxter in galactic scope."