Definitions
American Heritage® Dictionary of the English Language, Fourth Edition
- n. Any of the four planets, Mercury, Venus, Earth, and Mars, whose orbits are closest to the sun.
Wiktionary
- n. astronomy Any planet of the Solar System whose orbit is located between the asteroid belt and the sun, i.e., any of Mercury, Venus, Earth, or Mars.
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Lists
These user-created lists contain the word ‘inner planet’.
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Planets!
Types of planets.
gas giant, Jovian planet, hot Jupiter, terrestrial planet, rocky planet, iron planet, diamond planet, super-earth, circumbinary planet, double planet, mesoplanet, protoplanet and 26 more...
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