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单词 Pluto
释义

Definition of Pluto in English:

Pluto

proper nounˈpluːtəʊˈpludoʊ
  • 1Greek Mythology
    The god of the underworld.

    〔希腊神话〕普路托,冥王。亦称HADES

    Also called Hades
  • 2Astronomy
    A small planetary body orbiting the sun, discovered in 1930 by Clyde Tombaugh.

    〔天文〕冥王星

    Pluto usually orbits beyond Neptune at an average distance of 5,900 million km from the sun, though its orbit is so eccentric that at perihelion it is closer to the sun than Neptune (as in 1979–99). Pluto is smaller than earth's moon (diameter about 2,250 km), but it has its own large satellite (Charon), and four other small moons. From the time of its discovery it was regarded as the ninth (outermost) planet of the solar system, but in the 1990s its unusual characteristics led astronomers to question its planetary nature. In August 2006 the International Astronomical Union formally declared Pluto to be a dwarf planet rather than a planet proper. Pluto was visited by NASA’s space probe, New Horizons, in 2015

Origin

Via Latin from Ploutōn, the Greek name of the god of the underworld.

Rhymes

Bhutto, butoh, Maputo, prosciutto, ritenuto, sostenuto, tenuto

Definition of Pluto in US English:

Pluto

proper nounˈplo͞odōˈpludoʊ
  • 1Greek Mythology
    The god of the underworld.

    〔希腊神话〕普路托,冥王。亦称HADES

    Also called Hades
  • 2Astronomy
    A small planetary body orbiting the sun, discovered in 1930 by Clyde Tombaugh.

    〔天文〕冥王星

    Pluto usually orbits beyond Neptune at an average distance of 5,900 million km from the sun, although its orbit is so eccentric that at perihelion it is closer to the sun than Neptune (as in 1979–99). Pluto is smaller than earth's moon (diameter about 2,250 km), but it has its own large satellite (Charon), and four other small moons. From the time of its discovery it was regarded as the ninth (outermost) planet of the solar system, but in the 1990s its unusual characteristics led astronomers to question its planetary nature. In August 2006, the International Astronomical Union formally declared Pluto to be a dwarf planet rather than a planet proper. Pluto was visited by NASA’s space probe, New Horizons, in 2015

Origin

Via Latin from Ploutōn, the Greek name of the god of the underworld.

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更新时间:2025/1/30 1:39:15