planet
- A celestial body that orbits a star, is massive enough to be rounded by its own gravity, and has cleared its neighboring region of planetesimals. nounEarth is the third planet from the Sun in our solar system.Astronomers discovered a new planet orbiting a distant star.
- In astrology, a celestial body believed to influence human affairs and natural phenomena. nounIn astrology, Mars is considered a planet that represents energy and action.The alignment of the planets is said to affect one's horoscope.