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precession
noun
- the act of preceding; precedence
- Astron. precession of the equinoxes
- Mech. an effect exhibited by a spinning body, as a top, when an applied torque tends to change the direction of its rotational axis, causing this axis generally to describe a cone and to turn at right angles to the direction of the torque
Related Forms:
- precessional adjective
See precession in American Heritage Dictionary 4
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