Definition of precession
: a comparatively slow gyration of the rotation axis of a spinning body about another line intersecting it so as to describe a cone
From the M-W Editors
Origin and Etymology of precession
New Latin praecession-, praecessio, from Medieval Latin, act of preceding, from Latin praecedere to precede
First Known Use: 1879
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See words that rhyme with precession Britannica.com: Encyclopedia article about precession
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