platinotype

noun

plat·​i·​no·​type

ˈplatᵊnōˌtīp

: a permanent photographic print having an image of platinum black obtained by the reduction of a platinum salt by a developer containing an iron salt (as ferrous oxalate)

also : the process of making such a print

Word History

Etymology

platin- + type

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now