| 单词 | inner planet |
| 释义 | inner planet[ in-er plan-it ] / ˈɪn ər ˈplæn ɪt / SEE SYNONYMS FOR inner planet ON THESAURUS.COM 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. Compare outer planet. Origin of inner planetFirst recorded in 1950–55 Words nearby inner planetinner man, inner mission, Inner Mongolia, innermost, innermost intercostal muscle, inner planet, inner product, inner sanctum, innersole, inner space, innerspring Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for inner planetinner planet nounany 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 planetinner 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 Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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