[pre.ces.sion] n [NL praecession-, praecessio, fr. ML, act of preceding, fr. L praecedere to precede] (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 adj
PRECESSION
Meaning of PRECESSION in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012