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whitening

American

[hwahyt-n-ing, wahyt-] / ˈʰwaɪt n ɪŋ, ˈwaɪt- /

noun

a preparation for making something white; whiting.
the act or process of making or turning white.

Etymology

Origin of whitening

First recorded in 1595–1605; whiten + -ing ¹

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Although the powder has not yet been formulated into a toothpaste, the findings suggest it could lead to a new type of at-home whitening treatment that is both effective and protective of oral health.

From Science Daily • Mar. 23, 2026

At the import expo, it showcased a new whitening toothpaste for the Chinese market, developed at Crest’s Beijing research institute.

From The Wall Street Journal • Nov. 30, 2025

With shelves full of whitening, charcoal, and enamel-boosting pastes, it's easy to assume the pricier options will give you a healthier smile.

From BBC • Nov. 2, 2025

In food, calcium phosphate is used as a whitening agent.

From Los Angeles Times • May 14, 2025

She pushed a piece of hair out of her face, whitening the strand of hair with flour.

From "The Vanderbeekers of 141st Street" by Karina Yan Glaser

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023