dwarf planet

名词 n.
中文释义

英文释义

名词 n.
  1. A planetary (world-like) body of the Solar system, that directly orbits the Sun like the classical planets but does not gravitationally dominate other bodies in the region of its orbit.
    — A member of the Fomor Belt, Bres is a dwarf planet with no atmosphere.

词形变化

dwarf planets plural

词源

Coined by analogy with dwarf star, as part of a tripartite classification of planets: classical planets (the big 8 in the Sol system), satellite planets (planetary-mass moons) and dwarf planets. Redefined by the IAU in 2006 to be a category of sub-planetary objects.
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