precession

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precession

An MRI term for the relatively slow gyration of the axis of a spinning body, which traces out a conical configuration. Precision is caused by the application of a torque which tends to change the direction of the rotation axis and is continuously directed at right angles to the plane of the torque. The magnetic moment of a nucleus with spin will experience such a torque when inclined at an angle to the magnetic field, resulting in precession at the Larmor frequency.

pre·ces·sion

(prē-sesh'ŭn)
The secondary spin of magnetic movements around the main magnetic field.
References in periodicals archive ?
Asteroid PRO provides the orbital elements precessed to the date of observation as well as the asteroid's position in the sky, daily motion, magnitude, angular diameter, and distance.
Finally, I reran my program for a latitude of 31 |degrees~ north with the stellar positions precessed back to A.D.
Because the galaxy was not perfectly spheroidal, the dusty disk was subjected to gravitational torques that precessed and twisted it over a billion years or so into its present shape.