| 单词 | dwarf planet |
| 释义 | dwarf planetWord forms: plural dwarf planets countable noun A dwarf planet is an object in space that is like a small planet but does not completely fit thetechnical description of a planet. Pluto, Eris and the largest asteroid, Ceres, are all dwarf planets. dwarf planet in British Englishnoun a celestial body in the solar system that has mass sufficient for its own gravity to have rendered it spherical or near-spherical, yet too small to have removed material around its orbit by gravitational disturbance or accretion. The five recognized dwarf planets are Ceres, Eris, Pluto, Haumea, and Makemake; more may exist beyond Neptune |
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