Hypertext Webster Gateway: "gyration"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Gyration \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.
From WordNet (r) 1.7 (wn)
gyration
n 1: 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" [syn: {rotation},
{revolution}]
2: the act of rotating in a circle or spiral [syn: {whirling}]
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