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1. (n.) orrery
an apparatus for representing with movable balls the positions, motions, and phases of the bodies of the solar system.
Etymology: (1705–15; after Charles Boyle, Earl of Orrery (1676–1731), for whom it was first made)
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| Definition of 'orrery' |
Princeton's WordNet |
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1. (noun) orrery
planetarium consisting of an apparatus that illustrates the relative positions and motions of bodies in the solar system by rotation and revolution of balls moved by wheelwork; sometimes incorporated in a clock
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| Definitions of 'orrery' |
The Nuttall Encyclopedia |
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1. orrery
is a mechanical toy which exhibits, by an arrangement of rods, balls, and toothed wheels, the sun, the planets, and their moons, all performing their respective motions; so named after the Earl of Orrery, for whom Charles Boyle made the first one in 1715.
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Definitions of orrery 
