precession of the equinoxes
English
Noun
precession
of
the
equinoxes
(
plural
precessions of the equinoxes
)
The
slow
westward
shift
of the equinoxes along the
plane
of the
ecliptic
, resulting from precession of the
earth
's
axis
of
rotation
, and causing the equinoxes to
occur
earlier
each
year
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