Noun: nutation nyoo'tey-shun
- Involuntary nodding of the head
"The patient's nutation was a symptom of his neurological condition"
- (botany) spiral or circular movement of growing plant parts due to uneven growth rates
"The seedling stem showed nutation as it grew";
- circumnutation
- (physics/astronomy) oscillation or wobble in a rotating body's axis of rotation
"The Moon's gravitational pull causes nutation of Earth's axis"
Derived forms: nutations
Type of: nod
Encyclopedia: Nutation