platinotype

[ plat-n-oh-tahyp ]
/ ˈplæt n oʊˌtaɪp /

noun Photography.

a process of printing positives in which a platinum salt is used, rather than the usual silver salts, in order to make a more permanent print.
Also called platinum print. a print made by this process.

Origin of platinotype

First recorded in 1875–80; platin(um) + -o- + -type

Example sentences from the Web for platinotype

British Dictionary definitions for platinotype

platinotype
/ (ˈplætɪnəʊˌtaɪp) /

noun

an obsolete process for producing photographic prints using paper coated with an emulsion containing platinum salts, the resulting image in platinum black being more permanent and of a richer tone than the usual silver image