Definitions for "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.
Small clockwork or hand-cranked model of the planetary system - a popular astronomical demonstrational apparatus or educational demonstrator during the 18th and 19th centuries. An orrery might complement an astrolabe or a pair of celestial and terrestrial globes in a library or schoolroom.
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
A device used in Navigator's Guildhalls to simulate the movement of fragments in the Abyss.