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whitener

[hwahyt-n-er, wahyt-]
noun
  1. a preparation for making something white, as a bleach, dye, or polish: a bottle of shoe whitener.
  2. a person or thing that whitens.
  3. a person who applies whitener, as in a manufacturing process.
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Origin of whitener

First recorded in 1605–15; whiten + -er1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for whitener

whitener

noun
  1. a substance that makes something white or whiter
  2. a powdered substitute for milk or cream, used in coffee or tea
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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