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From The Collaborative International Dictionary of English v.0.44 [gcide]:
Orrery \Or"re*ry\, noun; pl. {Orreries}. [So named in honor of the Earl of Orrery.] An apparatus which illustrates, by the revolution of balls moved by wheelwork, the relative size, periodic motions, positions, orbits, etc., of bodies in the solar system.
From WordNet (r) 2.0 [wn]:
orrery
noun: 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 retrieved from local copies of the freely distributed DICT client/server software and databases. Click here for database copyright information. - KM |