Meaning of lunisolar precession

luniso'lar preces'sion

Pronunciation: [key]
— Astron. Astron.
  1. the principal component of the precession of the equinoxes, produced by the gravitational attraction of the sun and the moon on the equatorial bulge of the earth.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.