nutation
- Noun. (physics) a bobbing motion that accompanies the precession of a spinning rigid body.
- Noun. a nodding motion (of the head etc.).
- Noun. (astronomy) any of several irregularities in the precession of the equinoxes caused by varying torque applied to the Earth by the Sun and the Moon.
- Noun. (botany) the circular motion of the tip of a growing shoot.
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This entry was last updated on RefTopia from its source on 3/20/2012.