Photography

n. [Fr. photographie, from Gr. φῶς, φωτός, light, and γράφειν, to write.]

1. The science of the action of light on bodies; the principles of physics and chemistry which relate to the production of pictures by the action of light.
2. The art of producing pictures of objects by the action of light on chemically prepared surfaces, as of silver, glass, paper, &c.; or the art of receiving and fixing on such surfaces the images formed by the camera.
3. In a more restricted sense, the art of producing such pictures on chemically prepared paper.