Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “asteroid”

See all translations

asteroid

noun [C]  /ˈæs·təˌrɔɪd/ us  
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.
Translations of “asteroid”
in Spanish Asteroide…
in Chinese (Traditional) 小行星…
in Chinese (Simplified) 小行星…
(Definition of asteroid from the Cambridge Academic Content Dictionary © Cambridge University Press)
What is the pronunciation of asteroid?
Add Cambridge dictionaries to your browser to your website

Definitions of “asteroid” in other dictionaries

Word of the Day

glacial

made or left by a glacier

Word of the Day

Let’s celebrate! (words and phrases for parties)

by Kate Woodford,
December 17, 2014
​​​ With Christmas and New Year almost upon us, we thought it a good time to look at the language of parties and celebrations. First, let’s start with the word ‘party’ itself. To have or throw a party or, less commonly, to give a party is to arrange a party: We’re having a

Read More 

cinderella surgery noun

December 15, 2014
cosmetic surgery to the feet We have all heard of people having nose jobs, boob jobs and liposuction – but now a new trend growing in popularity in America: Cinderella surgery.

Read More