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inner planet
[ in-er plan-it ]
/ ˈɪn ər ˈplæn ɪt /
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noun Astronomy.
any of the planets in our solar system whose orbits lie between the sun and the asteroid belt, namely, Mercury, Venus, Earth, and Mars, all of which are terrestrial planets.
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THINGAMABOB OR THINGUMMY: CAN YOU DISTINGUISH BETWEEN THE US AND UK TERMS IN THIS QUIZ?
Do you know the difference between everyday US and UK terminology? Test yourself with this quiz on words that differ across the Atlantic.
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In the UK, COTTON CANDY is more commonly known as…
Compare outer planet.
Origin of inner planet
First recorded in 1950–55
Words nearby inner planet
Inner Light, inner man, inner mission, Inner Mongolia, innermost, inner planet, inner product, inner sanctum, innersole, inner space, innerspring
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use inner planet in a sentence
British Dictionary definitions for inner planet
inner planet
noun
any of the planets Mercury, Venus, earth, and Mars, whose orbits lie inside the asteroid belt
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for inner planet
inner planet
Any of the four planets Mercury, Venus, Earth, and Mars, whose orbits lie nearest the Sun. The inner planets are of similar size and have high densities compared to the larger gas giants among the outer planets. They are composed mostly of rock and metal and are relatively slow to rotate, with solid surfaces, no rings, and few moons. Also called terrestrial planet Compare outer planet. See also inferior planet.
The American Heritage® Science Dictionary
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