Word:

Orrery

Or´re`ry
n.1.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.
Noun1.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
planetarium
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Orphanotrophy
orphans' asylum
Orphans' court
Orpharion
Orphean
Orpheline
orphenadrine
Orpheus
Orphic
Orphrey
Orpiment
Orpin
orpine
Orpington
Orr
Orrach
-- Orrery --
Orris
Orris pea
Orris root
orrisroot
ORS
Orsedew
Orseille
Orsellic
Orsellinic
Orson Welles
Ort
Ortalidian
Ortalis
Ortega
Ortega y Gasset
orthicon
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