Definition of Radian

Noun: radian  rey-dee-un

1. The unit of plane angle adopted under the Système International d'Unités; equal to the angle at the centre of a circle subtended by an arc equal in length to the radius (approximately 57.295 degrees)
   - rad

See also:
radials
radiance

Anagrams containing the word radian

rdaina nradia anradi ianrad dianra adianr