■ noun
1》 Physics the slow movement of the axis of a spinning body around another axis.
2》 Astronomy the slow retrograde motion of the equinoctial points along the ecliptic, resulting in the earlier occurrence of equinoxes each year.
Derivatives
precess verb
~al adjective
Origin
C16: from late L. praecessio(n-) , from praecedere (see precede ).