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brownprint

American  
[broun-print] / ˈbraʊnˌprɪnt /

noun

  1. a process of photographic reproduction using a mixture of iron and silver salts to produce a white image on a sepia ground.

Etymology

Origin of brownprint

brown + print, on the model of blueprint

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.

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