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Definition of Terrestrial planet
1. Noun. A planet having a compact rocky surface like the Earth's; the four innermost planets in the solar system.
Specialized synonyms: Earth, Globe, World, Mars, Red Planet, Mercury, Venus
Generic synonyms: Major Planet, Planet
Generic synonyms: Major Planet, Planet
Definition of Terrestrial planet
1. Noun. Any planet of the solar system or any exoplanet which is "Earth-like" in the sense that it is composed primarily of metals and rock, in contrast to a planet which is a gas giant. ¹
¹ Source: wiktionary.com