ˈkärˌbrō noun
or carbro process
( -s )
Etymology: blend of carb- and bro- (in bromide )
: a photographic process of making either a carbon transfer or color print from a developed silver image by soaking in a bichromate bleach solution a gelatin-coated tissue containing either carbon particles or color pigments and then placing the tissue in contact with a wet silver-bromide print, after which the unhardened parts of the gelatin are washed away leaving a carbon image that is then transferred to another support