autorotation
/ˌɔdoʊˌroʊˈteɪʃ(ə)n/
noun
Rotation of an object caused by the flow of moving air or water around the shape of the object (e.g. a winged seed).
noun
Rotation of an object caused by the flow of moving air or water around the shape of the object (e.g. a winged seed).
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