transcription, транскрипция: [ ˈreɪdjən ]
n. Geom. a unit of angle, equal to an angle at the centre of a circle the arc of which is equal in length to the radius. [RADIUS + -AN]
RADIAN
Meaning of RADIAN in English
English main colloquial, spoken dictionary. Английский основной разговорный словарь. 2012