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terrestrial planet

[ tuh-res-tree-uhl plan-it ]
/ təˈrɛs tri əl ˈplæn ɪt /
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noun Astronomy.
a planet composed mostly of metals or silica rocks: in our solar system, the terrestrial planets are the four inner planets.
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Also called tel·lur·ic plan·et, [te-loor-ik plan-it] /tɛˈlʊər ɪk ˈplæn ɪt/ rock·y plan·et [rok-ee plan-it] /ˈrɒk i ˈplæn ɪt/ .

Origin of terrestrial planet

First recorded in 1885–90
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use terrestrial planet in a sentence

Scientific definitions for terrestrial planet

terrestrial planet

See inner planet.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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