An Etymological Dictionary of Astronomy and Astrophysics

That component of general precession caused by the combined effect of the Moon, the Sun and the planets on the equatorial protuberance of the Earth, producing a westward motion of the equinoxes along the ecliptic about 50’’ per year.
According to an IAU resolution adopted in August 2006, the present terminology replaces lunisolar precession.

See also: → precession; → equator.