whitening

noun

whit·​en·​ing ˈ(h)wīt-niŋ 

-ᵊn-iŋ

1

: the act or process of making or becoming white

2

: something that is used to make white : whiting

Examples of whitening in a Sentence

Recent Examples on the Web

Before choosing a whitening method, check the care label for guidance on water temperature, safe cleaning agents, and recommended drying methods. —Quincy Bulin, Southern Living, 17 Dec. 2025

The kit comes with 22 whitening sets, plus two one-hour treatments for more concentrated brightening. —Clara McMahon, PEOPLE, 27 Nov. 2025

That’s why this year’s event is the perfect time to stock up on some of your beauty favorites—even the small things like makeup wipes and teeth whitening strips. —Chaise Sanders, Travel + Leisure, 27 Nov. 2025

Prices depend on how many teeth are treated, the material used (porcelain, E-max, or zirconia), and whether other treatments such as gum contouring or whitening are included. —William Jones, USA Today, 24 Nov. 2025

Word History

First Known Use

1576, in the meaning defined at sense 1

Rhymes for whitening

• brightening
• frightening
• heightening
• lightening
• tightening
• enlightening