STERADIAN


Meaning of STERADIAN in English

[ stə'reɪdɪən ]

(abbrev.: sr )

■ noun the SI unit of solid angle, equal to the angle at the centre of a sphere subtended by a part of the surface equal in area to the square of the radius.

Origin

C19: from Gk stereos 'solid' + radian .

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.