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reducer

[ri-doo-ser, -dyoo-] /rɪˈdu sər, -ˈdyu-/
noun
1.
a person or thing that reduces.
2.
Photography.
  1. an oxidizing solution for lessening the density of an exposed negative.
  2. a developing agent.
3.
(in plumbing) a coupling decreasing in diameter at one end.
Compare increaser (def 2).
Origin
1520-1530
1520-30; reduce + -er1
Related forms
antireducer, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for anti reducer

reducer

/rɪˈdjuːsə/
noun
1.
(photog) a chemical solution used to lessen the density of a negative or print by oxidizing some of the blackened silver to soluble silver compounds Compare intensifier (sense 3)
2.
a pipe fitting connecting two pipes of different diameters
3.
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
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