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a celestial body which orbits the Sun but is further from it than Neptune; designated by the International Astronomical Union to refer to Pluto and similar space objects

A plutoid shares its orbit with other objects and is somewhat spherical.
Word Origin



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  • Plutomania

    noun a passion or craving for wealth, obsession with money; delusion that one is wealthy Word Origin Greek ploutos ‘wealth’ n. 1650s, “mad pursuit of wealth,” from Greek ploutos “wealth” (see Pluto) + mania. As “imaginary possession of wealth” from 1894. Related: Plutomaniac.

  • Pluton

    [ploo-ton] /ˈplu tɒn/ noun, Geology. 1. any body of igneous rock that solidified far below the earth’s surface. /ˈpluːtɒn/ noun 1. any mass of igneous rock that has solidified below the surface of the earth pluton (pl’tŏn’) A large body of igneous rock formed when a plume of magma cools and solidifies underground. Although most […]

  • Plutonian

    [ploo-toh-nee-uh n] /pluˈtoʊ ni ən/ adjective 1. Also, Plutonic [ploo-ton-ik] /pluˈtɒn ɪk/ (Show IPA). of, relating to, or resembling Pluto or the lower world; infernal. /pluːˈtəʊnɪən/ adjective 1. of or relating to Pluto (the god) or the underworld; infernal adj. 1660s, “pertaining to the god Pluto,” from Latin Plutonius, from Greek Ploutonius, from Plouton “pertaining […]

  • Plutonic

    [ploo-ton-ik] /pluˈtɒn ɪk/ adjective, Geology. 1. noting or pertaining to a class of igneous rocks that have solidified far below the earth’s surface. /pluːˈtɒnɪk/ adjective 1. (of igneous rocks) derived from magma that has cooled and solidified below the surface of the earth Also abyssal adj. “pertaining to or involving intense heat deep in the […]

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