terrestrial planet

[ tuh-res-tree-uhl plan-it ]
/ təˈrɛs tri əl ˈplæn ɪt /

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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“I do believe that the buck stops here, that I cannot rely upon public opinion polls to tell me what is right. I do believe that right makes might and that if I am wrong, 10 angels swearing I was right would make no difference.”
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. 2020

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.