| 单词 | Pluto |
| 释义 | Word Frequency Pluto 1(ˈpluːtəʊ) noun classical mythology the god of the underworld; Hades Word Frequency Pluto 2(ˈpluːtəʊ) noun 1. the second-largest dwarf planet in the solar system, located in the Kuiper belt; discovered in 1930 by Clyde Tombaugh (1906–97); classified as a planet until 2006, when it was reclassified; it has five known satellites. Period of revolution around the sun: 248 years; period of axial rotation: 6.5 days; mass: 0.00218 times that of earth; diameter: 2300 km; Pluto has an elliptical orbit, its closest point to the sun is 29.7 AU and its farthest point away is 49.7 AU verb (tr; sometimes not capital) 2. to reduce (something) in status or importance 3. to put an end to (something) Word origin Latin, from Greek Ploutōn, literally: the rich oneWord Frequency PLUTO(ˈpluːtəʊ) noun the code name of pipelines laid under the English Channel to supply fuel to the Allied forces landing in Normandy in 1944 Word origin C20: from p(ipe)l(ine) u(nder) t(he) o(cean) |
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