asteroid
nounmasculinetécnico/ɐʃtɨˈɾɔjdɨ/medium
as·te·roi·de
Definition
A rocky or metallic body, irregular in shape, smaller than a planet, that orbits the Sun, mainly in the belt between Mars and Jupiter.
Astronomers have discovered a new near-Earth asteroid.
The extinction of the dinosaurs is believed to have been caused by the impact of a large asteroid.
Common collocations
near-Earth asteroidasteroid impactasteroid belt
Etymology
Do grego 'asteroeidés', através do francês 'astéroïde' (asteroide).