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- Rhymes: -eɪʃən
- (physics) A bobbing motion that accompanies the precession of a spinning rigid body.
- A nodding motion (of the head etc.).
- (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.
- (botany) The circular motion of the tip of a growing shoot.
nutation f (plural nutations)