IPA: /njuːˈteɪʃən/
KK: /nʊˈteɪʃən/
A slight wobble or movement in a rotating object, such as a gyroscope, or a small periodic motion of the Earth's celestial pole.
The nutation of the gyroscope was observed during the experiment.
Nutation is formed from "nutare" (meaning to nod) and the suffix "-tion" (indicating the action or process of). The word describes the action of nodding or a slight movement, particularly in the context of oscillation or variation in position.
Imagine a small movement or 'nodding' ('nutare') that indicates a change or action, which helps you remember that 'nutation' refers to a slight oscillation or variation.