noun
- Astronomy) any of the nine large celestial bodies in the solar system that revolve around the sun and shine by reflected light; Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto in order of their proximity to the sun; viewed from the constellation Hercules, all the planets rotate around the sun in a counterclockwise direction. (.
- synonyms: planet
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). major planet. Retrieved September 20, 2026, from http://smartdefine.org/major_planet/definitions/1293096 |
| Chicago | WordNet. 2010. "major planet" http://smartdefine.org/major_planet/definitions/1293096 (accessed September 20, 2026). |
| Harvard | WordNet 2010, major planet, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/major_planet/definitions/1293096>. |
| MLA | WordNet. "major planet" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/major_planet/definitions/1293096> |