Radian - definition, pronunciation, transcription

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Amer.  |ˈreɪdɪən|  American pronunciation of the word radian
Brit.  |ˈreɪdɪən|  British pronunciation of the word radian

noun

- 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)
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