Definition of major planet in English:

major planet

Syllabification: ma·jor plan·et

noun

  • Any of the eight planets of the solar system, as distinct from an asteroid or smaller body.
    More example sentences
    • Most of the attention focuses on Pluto's status as one of our solar system's major planets.
    • The apparent paths of the sun, the moon, and the major planets all fall within the zodiac.
    • The asteroids are most likely leftover sloar system bits and stuff captured by the sun and major planets.

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Word of the day astrogation
Pronunciation: ˌastrə(ʊ)ˈgeɪʃ(ə)n
noun
(in science fiction) navigation in outer space