| 单词 | dwarf planet |
| 释义 | dwarf planet[ dwawrf-plan-it ] / ˈdwɔrf ˈplæn ɪt / noun Astronomy.a spherical celestial body revolving about the sun, similar to a planet but not large enough to gravitationally clear its orbital region of most or all other celestial bodies. In 2006, the planet Pluto was reclassified as a dwarf planet. Origin of dwarf planetFirst recorded in 1990–95 Words nearby dwarf planetdwarfism, dwarf Japanese quince, dwarf male, dwarf mallow, dwarf palmetto, dwarf planet, dwarf shoot, dwarf star, dwarf sumac, Dwayne, DWB Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for dwarf planetdwarf planet nounany celestial body within the solar system that is larger than a satellite but smaller than a planet, and that orbits the sun Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Scientific definitions for dwarf planetdwarf planet A celestial body that orbits the Sun and is massive enough to assume a nearly spherical shape, but that does not clear other bodies from the neighborhood around its orbit and is not a satellite of a planet. Dwarf planets include Ceres, Pluto, and Eris. This category was created by the International Astronomical Union in 2006. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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