Definitions | radian |
| noun
- (geometry) In the International System of Units, the derived unit of plane angular measure of angle equal to 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
Translations: - French: radian
- French, radian
(trans-mid)
Etymology: From radius, radi(us) + -an
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