noun pre·ces·sion \prē-ˈse-shən\

Definition of precession

  1. :  a comparatively slow gyration of the rotation axis of a spinning body about another line intersecting it so as to describe a cone


play \-ˈsesh-nəl, -ˈse-shə-nəl\ adjective

Origin and Etymology of precession

New Latin praecession-, praecessio, from Medieval Latin, act of preceding, from Latin praecedere to precede

First Known Use: 1879

Learn More about precession

Seen and Heard

What made you want to look up precession? Please tell us where you read or heard it (including the quote, if possible).