galactic

adjective

ga·​lac·​tic gə-ˈlak-tik 

1

: of or relating to a galaxy and especially the Milky Way galaxy

2

: huge

a galactic sum of money

Synonyms

• giant
• vast
• huge
• gigantic
• massive
• tremendous
• enormous
• astronomical
• colossal
• astronomic
• cosmic
• mammoth
• immense
• bumper
• monumental
• planetary
• titanic
• mountainous
• oceanic
• monster
• monstrous

Examples of galactic in a Sentence

a galactic serving of soda that would have been enough for three moviegoers

Recent Examples on the Web

Still others may be the size of galactic cores, which might explain an issue with the traditional WIMP picture. —ArsTechnica, 25 June 2025

Moving forward, the map will help researchers investigate the properties of galactic gas and its role in star formation. —Margherita Bassi, Smithsonian Magazine, 23 June 2025

The telescope’s location in the Southern Hemisphere allows for a great view of the Milky Way’s galactic center, said Edward Ajhar, Rubin Observatory’s program officer. —Ashley Strickland, CNN Money, 23 June 2025

But now, a team of astronomers has for the first time been able to determine the properties of one of these filaments, which links four galactic clusters in the local universe. —Robert Lea, Space.com, 19 June 2025

Word History

Etymology

borrowed from New Latin galacticus (taken as derivative of Galaxias "Milky Way"), borrowed from Greek galaktikós "milky," from galakt-, gála "milk" + -ikos -ic entry 1 — more at galaxy

First Known Use

1839, in the meaning defined at sense 1

Rhymes for galactic

• climactic
• didactic
• syntactic
• anaphylactic
• extragalactic
• intergalactic
• stereotactic
• chemotactic
• chiropractic
• isotactic
• prophylactic
• lactic

Kids Definition

galactic

adjective

ga·​lac·​tic gə-ˈlak-tik 

: of or relating to a galaxy