noun
: distortion (as by an optical instrument or television receiver) in which the image of a straight line appears to be curved convexly toward the axis — compare barrel distortion
noun
: distortion (as by an optical instrument or television receiver) in which the image of a straight line appears to be curved convexly toward the axis — compare barrel distortion
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012