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orrery

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orrery

One entry found.

Main Entry: or·rery
Pronunciation: \ˈȯr-ər-ē, ˈär-\
Function: noun
Inflected Form(s): plural or·rer·ies
Etymology: Charles Boyle †1731 4th Earl of Orrery
Date: 1713

: an apparatus showing the relative positions and motions of bodies in the solar system by balls moved by a clockwork

[orrery illustration]

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