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

The Sombrero Galaxy was imaged to magnificent effect by the Hubble Space Telescope — most recently to mark its 35th anniversary in space — which revealed its sweeping disk-like structure and pronounced dusty lanes shining beneath its glowing galactic core. —Anthony Wood, Space.com, 14 Mar. 2026

Initially, the star-formation rate will remain small and continue to decline ever so slightly, while isolated episodes of star-formation continue within our galactic plane. —Big Think, 13 Mar. 2026

The new simulator reproduces galactic cosmic rays using ion accelerators, giving researchers a powerful tool to study radiation exposure in deep space. —Aamir Khollam, Interesting Engineering, 13 Mar. 2026

The telltale sign of the sun’s galactic journey is its chemical composition, says Tokyo Metropolitan University astronomer Daisuke Taniguchi, a co-author on both of the studies. —Jacek Krywko, Scientific American, 12 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