Orrery meaning

ôr'ə-rē, ŏr'-
A mechanical model of the solar system or parts of it.
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A mechanical apparatus consisting of balls of various sizes arranged as on wires, designed to illustrate the relative motions and positions of the sun, earth, moon, and often other planets.
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A clockwork model of any given solar system.
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Origin of orrery

After Charles Boyle, Fourth Earl of Orrery (1676–1731), for whom one was made