Precesses vs Precessed - What's the difference?

As verbs the difference between precesses and precessed

is that precesses is third-person singular of precess while precessed is past tense of precess.

(head)

(precess)

(es)

(of an axis of rotation) To have an angle that varies cyclically.

(of a rotating object) To wobble; to rotate about an axis that precesses.

(head)

(precess)