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

Instead, these magnetic fields seem to be organized by the motion of gas that occurred during the formation of this galactic cluster. — Robert Lea, Space.com, 21 July 2026

Meanwhile, an instrument called the Pluto Energetic Particle Spectrometer Science Investigation is measuring galactic cosmic rays, extremely fast particles created when stars explode. — Ashley Strickland, CNN Money, 16 July 2026

The cityscape through the windows was like a starry night from the future, galactic and buzzing. — Literary Hub, 14 July 2026

Just as Karatsuba’s algorithm only outperforms the grade-school approach when numbers get reasonably large, the Harvey-van der Hoeven algorithm doesn’t pull ahead until the numbers become truly galactic. — Jack Murtagh, Scientific American, 13 July 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