Definition of "whitening" []

• An agent used to make something white or whiter. (noun)
• The act or process of making white or whiter. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "This includes two cosmetic procedures semi-annually. sign-up bonus is free skin whitening and eyelid surgery."
• "Some ciphers have an additional step called whitening"
• "- Pixenate offers a lot of tools for touching up personal photos, including one specifically for tooth whitening, which is a new one we haven't seen before."