planetary object

短语

词形变化

planetary objects 复数 planetary objects

释义与例句

n.
  1. 1.

    Any secondary body in the Solar system that is geologically differentiated or in hydrostatic equilibrium and thus has a planet-like geology: a planet, dwarf planet, or the larger moons and asteroids.

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  2. 2.

    Any substantial body in orbit around the Sun or other star: a planet, minor planet, or comet.

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  3. 3.

    Any substantial body associated with the development of planets: a protoplanet, planetesimal.

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