Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “galaxy”


noun [C]    /ˈɡæl·ək·si/ earth science
one of the large , independent groups of stars in the universe A galaxy is sometimes used to describe a gathering of famous people : a galaxy of Hollywood stars
(Definition of galaxy noun from the Cambridge Academic Content Dictionary © Cambridge University Press)
Focus on the pronunciation of galaxy

Definitions of “galaxy” in other dictionaries

Word of the Day

as husband and wife

in the same way as two people who are married

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More