reducer

[ ri-doo-ser, -dyoo- ]

/ rɪˈdu sər, -ˈdyu- /

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noun

a person or thing that reduces.

Photography.

an oxidizing solution for lessening the density of an exposed negative.
a developing agent.

(in plumbing) a coupling decreasing in diameter at one end.Compare increaser (def. 2).

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Origin of reducer

First recorded in 1520–30; reduce + -er¹

OTHER WORDS FROM reducer

an·ti·re·duc·er, noun

Words nearby reducer

reduced hematin, reduced hemoglobin, reduced level, reduced mass, reduced paid-up insurance, reducer, reducible, reducible hernia, reducing agent, reducing glass, reduct

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use reducer in a sentence

The greater blood flow can also lead to a large release of endorphins—hormones that act as a natural pain reducer throughout the body.
Swimming is the ultimate brain exercise. Here’s why.|Purbita Saha|July 28, 2021|Popular-Science
Research and development efforts should be directed to key components such as cutting-edge sensors and precision reducers for factory robots, he says.
What China’s Big Tech CEOs propose at the annual parliament meeting|Rita Liao|March 5, 2021|TechCrunch
Most high and mighty Czar of all flesh, ceaseless reducer of empires, unfathomable glutton in the whole realms of nature.
Poems of The Third Period|Friedrich Schiller
Or, is it king Nala the reducer of hostile towns that hath come here?
Mahabharata of Krishna-Dwaipayana Vyasa Bk. 3 Pt. 1|Krishna-Dwaipayana Vyasa

Succedaneum for Chrysarobin; very active reducer or "reactive."
Merck's 1899 Manual|Merck & Co.
Very many, if not most, slides are all the better for just a touch of a "reducer" such as follows:—The ordinary "hypo."
The Barnet Book of Photography|Various
To prepare this reducer, take one part varnish (the same varnish to be reduced), and two parts of turpentine.
Advanced Toy Making for Schools|David M. Mitchell

British Dictionary definitions for reducer

reducer

/ (rɪˈdjuːsə) /

noun

photog a chemical solution used to lessen the density of a negative or print by oxidizing some of the blackened silver to soluble silver compoundsCompare intensifier (def. 3)

a pipe fitting connecting two pipes of different diameters

a person or thing that reduces

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