Are yams and sweet potatoes the same?
1839, "picture obtained by photography," coined by Sir John Herschel from photo- + -graph "instrument for recording; something written." It won out over other suggestions, such as photogene and heliograph. Neo-Anglo-Saxonists prefer sunprint. The verb, as well as photography, are first found in a paper read before the Royal Society on March 14, 1839.