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6 definitions found

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

 ra·di·an /ˈrediən/

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

 ra·di·an /ˈredɪən/ 名詞

From: Taiwan MOE computer dictionary


From: Network Terminology

 弧度 弳

From: Webster's Revised Unabridged Dictionary (1913)

 Ra·di·an n.  Math. An arc of a circle which is equal to the radius, or the angle measured by such an arc.

From: WordNet (r) 2.0

      n : the unit of plane angle adopted under the Systeme
          International d'Unites; equal to the angle at the center
          of a circle subtended by an arc equal in length to the
          radius (approximately 57.295 degrees) [syn: rad]