ORRERY
\ˈɒɹəɹi], \ˈɒɹəɹi], \ˈɒ_ɹ_ə_ɹ_i]\
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An apparatus for illustrating, by balls mounted on rods, the size, positions, motions, etc., of the heavenly bodies.
By Daniel Lyons
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Instrument to illustrate planetary motions.
By William Hand Browne, Samuel Stehman Haldeman
Word of the day
hydromorphic
- [Greek] Structurally adapted to an aquatic environment, as organs of water plants.