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planet    音标拼音: [pl'ænət]
n. 行星

行星

planet
n 1: (astronomy) any of the nine large celestial bodies in the
solar system that revolve around the sun and shine by
reflected light; Mercury, Venus, Earth, Mars, Jupiter,
Saturn, Uranus, Neptune, and Pluto in order of their
proximity to the sun; viewed from the constellation
Hercules, all the planets rotate around the sun in a
counterclockwise direction [synonym: {planet}, {major planet}]
2: a person who follows or serves another [synonym: {satellite},
{planet}]
3: any celestial body (other than comets or satellites) that
revolves around a star

Planet \Plan"et\, n. [OE. planete, F. plan[`e]te, L. planeta,
fr. Gr. ?, and ? a planet; prop. wandering, fr. ? to wander,
fr. ? a wandering.]
1. (Astron.) A celestial body which revolves about the sun in
an orbit of a moderate degree of eccentricity. It is
distinguished from a comet by the absence of a coma, and
by having a less eccentric orbit. See {Solar system}.
[1913 Webster]

Note: The term planet was first used to distinguish those
stars which have an apparent motion through the
constellations from the fixed stars, which retain their
relative places unchanged. The inferior planets are
Mercury and Venus, which are nearer to the sun than is
the earth; the superior planets are Mars, the
asteroids, Jupiter, Saturn, Uranus, and Neptune, which
are farther from the sun than is the earth. Primary
planets are those which revolve about the sun;
secondary planets, or moons, are those which revolve
around the primary planets as satellites, and at the
same time revolve with them about the sun.
[1913 Webster]

2. A star, as influencing the fate of a men.
[1913 Webster]

There's some ill planet reigns. --Shak.
[1913 Webster]

{Planet gear}. (Mach.) See {Epicyclic train}, under
{Epicyclic}.

{Planet wheel}, a gear wheel which revolves around the wheel
with which it meshes, in an epicyclic train.
[1913 Webster]

21 Moby Thesaurus words for "planet":
Earth, Jupiter, Mars, Mercury, Neptune, Pluto, Saturn, Uranus,
Venus, asteroid, globe, inferior planet, major planet,
minor planet, planetoid, secondary planet, solar system,
superior planet, terrestrial planet, wanderer, world



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