ˈhes- noun
Usage: usually capitalized H
Etymology: after Carl von Hess died 1923 German ophthalmologist
: a third positive afterimage in a succession of visual afterimages resulting from a brief light stimulus
ˈhes- noun
Usage: usually capitalized H
Etymology: after Carl von Hess died 1923 German ophthalmologist
: a third positive afterimage in a succession of visual afterimages resulting from a brief light stimulus
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012