Definition of “asteroid” - English Dictionary

british dictionary

“asteroid” in American English

See all translations

asteroidnoun [ C ]

us /ˈæs·təˌrɔɪd/

earth science an object like a very large rock that goes around the sun like a planet:

Scientists are hoping an asteroid will clue them in about early life on earth.

(Definition of “asteroid” from the Cambridge Academic Content Dictionary © Cambridge University Press)