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

These galactic cores are called active galactic nuclei, or AGNs; and in fact, the monster black holes powering these phenomena can also funnel matter outward in the form of highly energetic jets of particles moving at nearly the speed of light. —Monisha Ravisetti, Space.com, 13 Aug. 2025

And among old galactic halo stars, the Lithium-7 underabundance is a factor of two to three below big bang nucleosynthesis predictions. —Bruce Dorminey, Forbes.com, 12 Aug. 2025

In many cases, similar accreting black holes are telltale signs of active galactic nuclei, but astronomers needed to examine the evidence more carefully. —Andrew Paul, Popular Science, 7 Aug. 2025

The nudge reminded Joe of Aldrin’s long-ago galactic snub of the group. —Gil Kaufman, Billboard, 6 Aug. 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