| 释义 |
planetesimal
plan·e·tes·i·mal P0349800 (plăn′ĭ-tĕs′ə-məl)n. Any of innumerable small bodies thought to have orbited the sun during the formation of the planets.
[planet + (infinit)esimal.]
plan′e·tes′i·mal adj.planetesimal (ˌplænɪˈtɛsɪməl) astronomyn (Astronomy) any of a number of small bodies formerly thought to have been drawn from the sun by the close passage of a star to the sun, eventually coalescing to form the planetsadj (Astronomy) of or relating to planetesimalsplan•e•tes•i•mal (ˌplæn ɪˈtɛs ə məl)
n. one of the small celestial bodies that, according to one theory, were fused to form the planets of the solar system. [1900–05; planet + (infinit) esimal] Thesaurus| Noun | 1. | planetesimal - one of many small solid celestial bodies thought to have existed at an early stage in the development of the solar systemcelestial body, heavenly body - natural objects visible in the sky |
Translations
planetesimal
planetesimal[‚plan·ə′tes·ə·məl] (astronomy) One of the rocky bodies, of the order of 1 mile (1.6 kilometer) in diameter, that are believed to have formed in the protosolar nebula, and whose accretion formed the rocky cores of the larger planets. planetesimal
Related to planetesimal: planetesimal hypothesis, Protoplanet, Planetesimal theory, heavy bombardmentWords related to planetesimalnoun one of many small solid celestial bodies thought to have existed at an early stage in the development of the solar systemRelated Words- celestial body
- heavenly body
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