01 n. The act of turning or whirling, as around a fixed center; a circular or spiral motion; motion about an axis; rotation; revolution.
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1.
The act of turning or whirling, as around a fixed center; a circular or spiral motion; motion about an axis; rotation; revolution.“The gyrations of an ascending balloon.” — De Quincey.“If a burning coal be nimbly moved round in a circle, with gyrations continually repeated, the whole circle will appear like fire.” — Sir I. Newton.
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2.
One of the whorls of a spiral univalve shell.(Zool.)
Phrases & compounds
Center of gyration —
See under Center.
Radius of gyration —
the distance between the axis of a rotating body and its center of gyration.