Precession of the equinoxes definition

Precession of the equinoxes

WordNet

(1) A slow westward shift of the equinoxes along the plane of the ecliptic caused by precession of the Earth's axis of rotation

WiktionaryText

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