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 of galactic

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

Examples of galactic in a Sentence

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

Recent Examples on the Web

Grillmair’s work had focused on uncovering the structure of the Milky Way, identifying faint stellar streams and substructures that make up the galactic halo surrounding our spiral galaxy, and helping reshape our understanding of how galaxies evolve, according to his website. —Clara Harter, Los Angeles Times, 20 Feb. 2026

Thus, understanding the impact of black holes on their home galaxies is vital for understanding galactic evolution. —Robert Lea, Space.com, 20 Feb. 2026

The terror is real, y'all, and the killer extraterrestrial goes perfectly with the galactic claustrophobia. —Brian Truitt, USA Today, 13 Feb. 2026

To combine this kind of depth perception with the galactic ache of an unreal love, of an undead infatuation, that was new. —James Parker, The Atlantic, 10 Feb. 2026

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