单词 | ice dwarf |
释义 | > as lemmasice dwarf ice dwarf n. Astronomy a minor planet or dwarf planet with an icy surface (cf. dwarf planet n. (c)); spec. any such object whose orbit is beyond that of Neptune. ΚΠ 1991 New Scientist 13 July 24/1 According to Stem, the three outermost planets all show signs of collision with an ‘ice dwarf’ body between 1000 and 2000 kilometres in diameter. 1995 Independent 28 Mar. 21/1 The numbers found to date suggest that the total population of these ‘ice dwarfs’ must be more than 10,000. 2007 D. A. Weintraub Is Pluto a Planet? xiii. 184 When college students open their textbooks, they learn about nine planets—four earthlike planets, four gas giant planets, and the ice dwarf Pluto. < as lemmas |
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