Meaning of CURVATURE in English
[ 'kə:vətʃə ]
■ noun the fact of being curved or the degree to which something is curved.
↘ Geometry the degree to which a curve deviates from a straight line, or a curved surface deviates from a plane.
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004