planet
plan-et · noun
Definitions
noun
- 1.
A celestial body moving in an orbit around a star.
- 2.
The earth.
Forms
plural: planets
Related words
Etymology
From Old French planete, from Late Latin planeta, from Greek planetes meaning "wanderer," from planasthai meaning "to wander." The Greeks called these celestial bodies "wandering stars" because they moved against the fixed background of other stars.