Definition of orrery
: an apparatus showing the relative positions and motions of bodies in the solar system by balls moved by a clockwork
Origin of orrery
Charles Boyle †1731 4th Earl of Orrery
First Known Use: 1713
Learn More about orrery
Britannica.com: Encyclopedia article about "orrery"
Seen and Heard
What made you want to look up orrery? Please tell us where you read or heard it (including the quote, if possible).