dwarf planet

短语

n. 矮行星

发音

US

词形变化

dwarf planets 复数 dwarf planets

释义与例句

n.
  1. 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.

    矮行星

    矮惑星

    天文

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.

来源：wiktionary