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

This shows up in quasar and galactic absorption lines, as illustrated above, in what’s known as the Lyman-α forest. —Big Think, 6 Mar. 2026

For more block-building galactic adventures, take a look at the best Lego Star Wars and best Lego space sets guides. —Chris McMullen, Space.com, 6 Mar. 2026

Longmore sees the galactic center as a proxy for the early universe. —Asuka Koda, CNN Money, 5 Mar. 2026

What started as a routine Target run turned into a galactic adventure for families in northeast Atlanta. —CBS News, 1 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