Source : Webster's Revised Unabridged Dictionary (1913)

Photography \Pho*tog"ra*phy\, n. [Photo- + -graphy: cf. F.
   photographie.]
   1. The science which relates to the action of light on
      sensitive bodies in the production of pictures, the
      fixation of images, and the like.

   2. The art or process of producing pictures by this action of
      light.

   Note: The well-focused optical image is thrown on a surface
         of metal, glass, paper, or other suitable substance,
         coated with collodion or gelatin, and sensitized with
         the chlorides, bromides, or iodides of silver, or other
         salts sensitive to light. The exposed plate is then
         treated with reducing agents, as pyrogallic acid,
         ferrous sulphate, etc., to develop the latent image.
         The image is then fixed by washing off the excess of
         unchanged sensitive salt with sodium hyposulphite
         (thiosulphate) or other suitable reagents.

Source : WordNet®

photography
     n 1: the act of taking and printing photographs [syn: {picture
          taking}]
     2: the process of producing images of objects on photosensitive
        surfaces
     3: the occupation of taking and printing photographs or making
        movies