Meaning of “asteroid” in the English Dictionary

american-english dictionary

"asteroid" in British English

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asteroidnoun [ C ]

uk /ˈæs.tər.ɔɪd/ us /ˈæs.tə.rɔɪd/


  • A one-kilometer wide asteroid could hold hundreds of billions of dollars worth of these minerals.
  • And on the asteroid Eros, there is more silver, gold, and aluminum than could ever be dug from the earth.
  • Asteroids contain minerals, such as nickel, cobalt, and even platinum.
  • The Outer Space Treaty covers the Moon, asteroids, and everything else in outer space.
  • They want to mine asteroids.
  • Thousands of asteroids pass near Earth every year, and scientists believe those asteroids could be very valuable.
  • To mine an asteroid, you must take everything you need with you into space: equipment, people, food, and water.

(Definition of “asteroid” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"asteroid" in American English

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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)