“+ noun
Etymology: bi- (II) + photometer
: an instrument for measuring the rate and efficiency of dark adaptation of the eye used especially in detecting vitamin A deficiency
“+ noun
Etymology: bi- (II) + photometer
: an instrument for measuring the rate and efficiency of dark adaptation of the eye used especially in detecting vitamin A deficiency
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012