restrainer

[ ri-strey-ner ]
/ rɪˈstreɪ nər /

noun

a person or thing that restrains.
Photography. a chemical added to a developer to retard its action.

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Origin of restrainer

First recorded in 1560–70; restrain + -er1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for restrainer

British Dictionary definitions for restrainer

restrainer
/ (rɪˈstreɪnə) /

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