Farmer's reducer

noun

A mixture of sodium thiosulfate with the bleaching agent potassium ferricyanide, used to reduce the density of a negative or gelatin silver print.

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Meanings

nounFarmer's reducer (countable and uncountable, plural Farmer's reducers)

plural Farmer's reducers

  1. countableuncountableartsA mixture of sodium thiosulfate with the bleaching agent potassium ferricyanide, used to reduce the density of a negative or gelatin silver print.

Origin

Named after Howard Farmer.

Full word history & related roots →
Cite this entry
APA

Farmer's reducer. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/Farmer's%20reducer

MLA

“Farmer's reducer.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Farmer's%20reducer. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “Farmer's reducer,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/Farmer's%20reducer.

Source: Farmer's reducer on Wiktionary, CC BY-SA 4.0.