Source : Webster's Revised Unabridged Dictionary (1913)

Daguerreotype \Da*guerre"o*type\ (d[.a]*g[e^]r"[-o]*t[imac]p),
   n. [From Daguerre the inventor + -type.]
   1. An early variety of photograph, produced on a silver
      plate, or copper plate covered with silver, and rendered
      sensitive by the action of iodine, or iodine and bromine,
      on which, after exposure in the camera, the latent image
      is developed by the vapor of mercury.

   2. The process of taking such pictures.

Daguerreotype \Da*guerre"o*type\ (d[.a]*g[e^]r"[-o]*t[imac]p),
   v. t. [imp. & p. p. {Daguerreotyped} (-t[imac]pt); p. pr. &
   vb. n. {Daguerreotyping} (-t[imac]`p[i^]ng).]
   1. To produce or represent by the daguerreotype process, as a
      picture.

   2. To impress with great distinctness; to imprint; to imitate
      exactly.

Source : WordNet®

daguerreotype
     n : a photograph made by an early photographic process; the
         image was produced on a silver plate sensitized to iodine
         and developed in mercury vapor