| gyration | 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) 2. <zoology> One of the whorls of a spiral univalve shell. Center of gyration. 3. <physics> Radius of gyration the distance between the axis of a rotating body and its center of gyration. Source: Websters Dictionary (01 Mar 1998) |
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