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4 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 gy·ra·tion /ʤaɪˈreʃən/

From: DICT.TW English-Chinese Medical Dictionary 英漢醫學字典

 gy·ra·tion /ʤaɪˈreʃən/ 名詞

From: Webster's Revised Unabridged Dictionary (1913)

 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. Zool. 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) 2.0

      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,
      2: the act of rotating in a circle or spiral [syn: whirling]