Definizione monolingua

planet

planet

1. Second-person plural subjunctive I of planen.

planet (plural planets)

1. (obsolete, except historical or astrology) Each of the seven major bodies which move relative to the fixed stars in the night sky—the Moon, Mercury, Venus, the Sun, Mars, Jupiter and Saturn.
   • 1749, Henry Fielding, Tom Jones, Folio Society 1973, p. 288:

     The moon . . . began to rise from her bed, where she had slumbered away the day, in order to sit up all night. Jones had not travelled far before he paid his compliments to that beautiful planet, and, turning to his companion, asked him if he had ever beheld so delicious an evening?

2. A large body which directly orbits a star (or star cluster) but which has not attained nuclear fusion. (The Galilean moons, the first fifteen or so asteroids, and Pluto were included as planets of the Sun in the 17th, 19th, and 20th centuries, respectively.)
3. (officially, since 2006) A body which orbits the Sun directly and is massive enough to be in hydrostatic equilibrium (effectively meaning a spheroid) and to have ""cleared its orbit"" (is the clearly dominant body in its neighborhood); specifically, the eight major bodies of Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
4. (minority usage since 2006) A body which orbits the Sun directly and is massive enough to be in hydrostatic equilibrium: the eight major planets, as above, as well as the many dwarf planets, including Pluto.
5. (minority usage) A planetary-mass object (planemo): the major planets, dwarf planets, and satellite planets (moons in hydrostatic equilibrium).

Definizione dizionario planet

	pianeta
	each of the seven major bodies which move relative to the fixed stars in the night sky
	rocky or gaseous spherical bodies orbiting the Sun
	similar body in orbit around a star
	A large, heavy body, which does not produce energy by nuclear fusion, moving in a stable elliptical orbit around a star.

planeta

stella

Altri significati:

(by extension) Any similar spherically shaped or tidally elongated body in orbit around a star or binary star which has cleared the debris out of its orbital path, but which has not attained nuclear fusion; an exoplanet.

Any of various rocky or gaseous spherical bodies orbiting the Sun, specifically the eight major bodies of Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. (The Galilean moons, four major asteroids, and the dwarf planet Pluto were formerly included, in the 17th, 19th, and 20th centuries respectively.)

(obsolete, except historical or astrology) Each of the seven major bodies which move relative to the fixed stars in the night sky—the Moon, Mercury, Venus, the Sun, Mars, Jupiter and Saturn.