Definition of Raian
Ra"di*an (-an), n. [From
Radius.] (Math.) An arc of a circle which is equal
to the radius, or the angle measured by such an arc.
- Webster's Unabridged Dictionary (1913)
- In the International System of Units, the supplementary unit of angle; the angle subtended at the centre of a circle by an arc of its circumference equal in length to the radius of the circle. Symbol: rad
French
- radian
Polish
- radian
Swedish
- radian
- The Nuttall Encyclopedia
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The correct Spelling of this word is: Radian
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