English Dictionary: radian | by the DICT Development Group |
2 results for radian | |
From WordNet (r) 3.0 (2006) [wn]: | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Radian \Ra"di*an\, n. [From {Radius}.] (Math.) An arc of a circle which is equal to the radius, or the angle measured by such an arc. |