单词 | protomoon |
释义 | > as lemmasprotomoon protomoon n. Brit. /ˈprəʊtə(ʊ)muːn/ , U.S. /ˈproʊdəˌmun/ , /ˈproʊdoʊˌmun/ Astronomy the moon at an early stage of its development.ΚΠ 1954 Proc. National Acad. Sci. U.S.A. 40 1109 The origin of the bodies that struck the moon and formed the craters..may be thought to be one of these four possibilities: (1) they formed inside ‘protomoon’, or rather from condensations in the inner part of the earth-moon cloud; [etc.]. 2004 New Scientist 14 Aug. 27/2 Theia's iron core sank into the Earth, while its molten rock layers splashed out into space. Once in orbit, the splattered pieces were pulled together by gravity to form a protomoon. < as lemmas |
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