daguerreotype

noun

1. an obsolete photographic process, invented in 1839, in which a picture made on a silver surface sensitized with iodine was developed by exposure to mercury vapor.
2. a picture made by this process.

verb (used with object), da·guerre·o·typed, da·guerre·o·typ·ing.

3. to photograph by this process.

noun

1. one of the earliest photographic processes, in which the image was produced on iodine-sensitized silver and developed in mercury vapour
2. a photograph formed by this process

n.

1839, from French daguerreotype, coined from name of inventor, Louis Daguerre (1789-1851) + -type (see type (n.)).