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precession

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precession

Main Entry:: pre·ces·sion
Pronunciation:: \prē-ˈse-shən\
Function:: noun
Etymology:: New Latin praecession-, praecessio, from Medieval Latin, act of preceding, from Latin praecedere to precede
Date:: 1879

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

— pre·ces·sion·al

Listen to the pronunciation of precessional

\-ˈsesh-nəl, -ˈse-shə-n^əl\ adjective

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