Definition of armillary sphere
: an old astronomical instrument composed of rings showing the positions of important circles of the celestial sphere
Read the Latest from M-W
Origin and Etymology of armillary sphere
French sphère armillaire, from Medieval Latin armilla, from Latin, bracelet, iron ring, from armus shoulder — more at arm
First Known Use: 1625
Learn More about armillary sphere
-
Britannica.com: Encyclopedia article about armillary sphere
Seen and Heard
What made you want to look up armillary sphere? Please tell us where you read or heard it (including the quote, if possible).
Writing? Check your grammar now!