Definitions for: Gyration


[n] the act of rotating in a circle or spiral
[n] a single complete turn (axial or orbital); "the plane made three rotations before it crashed"; "the revolution of the earth about the sun takes one year"



Webster (1913) Definition: Gy*ra"tion, n.
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. (Zo["o]l.) One of the whorls of a spiral univalve shell.

Center of gyration. (Mech.) See under Center.

Radius of gyration the distance between the axis of a
rotating body and its center of gyration. --Rankine.

Synonyms: revolution, rotation, whirling

See Also: axial motion, axial rotation, clockwise rotation, counterclockwise rotation, dextrorotation, levorotation, orbital motion, orbital rotation, roll, rotation, spin, turn, turning

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