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 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for platinotype

Historical Examples of platinotype

British Dictionary definitions for platinotype



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
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012