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

Scientists had long assumed most of the moon lay beyond the protection of Earth’s magnetic field, but in 2019 scientists began noticing something odd about the experiment’s data that suggested the moon was somewhat protected from galactic cosmic rays. —K. R. Callaway, Scientific American, 25 Mar. 2026

Experiments and observations in laboratories, in our Solar System, and on galactic and cosmic scales all bear this out in great agreement with General Relativity’s predictions, lending further support to the theory. —Big Think, 24 Mar. 2026

So, what's next in this galactic detective story? —Paul Sutter, Space.com, 23 Mar. 2026

The teaser features explosive glimpses of the galactic conflict that follows, as well as the internal battles that plague Paul. —Angelique Jackson, Variety, 17 Mar. 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