Planet
/ˈplænɪt/
Meaning & Definition
noun
A celestial body moving in an elliptical orbit around a star.
Earth is the third planet from the Sun in our solar system.
Any similar body, such as a dwarf planet, which orbits a star.
Pluto was reclassified as a dwarf planet by astronomers in 2006.
A large, round object in space that is not a star and does not produce its own light.
Jupiter is the largest planet in our solar system.
A hypothetical or unspecified planet.
In science fiction, alien life often exists on distant planets.
Etymology
From Old French 'planete', from Latin 'planeta', from Greek 'planētēs meaning 'wanderer'.
Common Phrases and Expressions
planet Earth
The third planet from the Sun, home to human life.
star planet
A planet that orbits a star.
inner planets
The rocky planets in our solar system, including Mercury, Venus, Earth, and Mars.
Related Words
moon
A natural satellite that orbits a planet.
star
A massive, luminous celestial body made of plasma that generates light and heat.
exoplanet
A planet that exists outside our solar system.
Slang Meanings
Out of this world
Her party was out of this world, it felt like a planet of its own!
Planet-sized problems
He's got planet-sized problems to deal with after the incident.