daguerreotypeEnglishOxford New American Dictionarydaguerreotype /dəˈɡerəˌtīp, dəˈɡɛrəˌtaɪp / (also daguerrotype) ▸ noun a photograph taken by an early photographic process employing an iodine-sensitized silvered plate and mercury vapor. – ORIGIN mid 19th century : from French daguerréotype, named after L.-J.-M. Daguerre (see Daguerre, Louis).