restrainer

[ri-strey-ner]

SEE MORE SYNONYMS FOR restrainer ON THESAURUS.COM

noun

a person or thing that restrains.

Photography. a chemical added to a developer to retard its action.

Origin of restrainer

First recorded in 1560–70; restrain + -er¹

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for restrainer

control, restriction, rein, ledge, barrier, restraint, blow, limitation, rejection, reverse, constraint, holdup, stoppage, frustration, obstruction, inhibition, harness, curb, disappointment, reversal

Examples from the Web for restrainer

Historical Examples of restrainer

For he was zealous, and yet not wanting in knowledge, the restrainer of zeal.
St. Bernard of Clairvaux's Life of St. Malachy of Armagh
H. J. Lawlor
The bromide is called a restrainer, as it makes the development of the image proceed more slowly.
Harper's Round Table, July 23, 1895
Various
What self-willed one would desire a mighty lord as his ruler and restrainer?
The Kath Sarit Sgara
Somadeva Bhatta
He was best known for his tannin process and alkaline developer, with a bromide solution as a restrainer.
The Evolution of Photography
John Werge
The development is extremely slow, without any tendency to fog; thus the addition of a restrainer should be avoided.
Scientific American Supplement, No. 467, December 13, 1884
Various

British Dictionary definitions for restrainer

restrainer

noun

a person who restrains

a chemical, such as potassium bromide, added to a photographic developer in order to reduce the amount of fog on a film and to retard the development

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