noun
: a device for indicating correct photographic exposure under varying conditions of illumination (as by measuring the light falling on or reflected from the subject by means of a photoelectric photometer)
noun
: a device for indicating correct photographic exposure under varying conditions of illumination (as by measuring the light falling on or reflected from the subject by means of a photoelectric photometer)
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012