poly·​hy·​droxy ˌpä-lē-hī-ˈdräk-sē How to pronounce polyhydroxy (audio)
: containing more than one hydroxyl group in the molecule

Examples of polyhydroxy in a Sentence

Recent Examples on the Web The beta hydroxy and polyhydroxy acids work together to help clear pores while gently exfoliating, while the watermelon enzymes exfoliate while brightening the skin. Erika Reals, Peoplemag, 30 Mar. 2023 Look for polyhydroxy acids (PHAs) instead. Audrey Noble, Seventeen, 26 Oct. 2020 Tuesday, January 10: Treat your skin with the Exuviance Age Reverse Rebuild-5 Cream, which is chock-full of firming peptides, gently exfoliating polyhydroxy acids, free-radical-fighting vitamin E, and moisturizing peony extract. Jennifer Hussein, Allure, 6 Jan. 2023 This rich, buttery formula contains polyhydroxy acids, an ingredient known for its gentle yet effective exfoliating properties, moisturizing vitamin B3, and soothing oat extract. Jennifer Hussein, Allure, 16 Dec. 2022 This fragrance-free body lotion is infused with pro-vitamin B3 (also known as niacinamide) to brighten skin while polyhydroxy acids gently exfoliate and oat extract soothes irritated skin. Jennifer Hussein, Allure, 25 Oct. 2022 For sensitive skin types, gentle chemical exfoliants that include PHAs (polyhydroxy acids) are ideal. Sarah Madaus, SELF, 9 Nov. 2021 Chlöe opts for the normal-and-combination skin formula, a 9 percent blend of AHAs and polyhydroxy acids (PHAs). Lindy Segal, Harper's BAZAAR, 29 Sep. 2021 Those with sensitive skin may want to look into the even gentler polyhydroxy acids (PHAs), Dr. Ngo says, and should avoid physical exfoliators like harsh scrubs containing pits or abrasive beads. Sarah Jacoby, SELF, 22 Aug. 2019

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'polyhydroxy.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1895, in the meaning defined above

Time Traveler
The first known use of polyhydroxy was in 1895

Dictionary Entries Near polyhydroxy

Cite this Entry

“Polyhydroxy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/polyhydroxy. Accessed 14 Jul. 2024.

Medical Definition


poly·​hy·​droxy -hī-ˈdräk-sē How to pronounce polyhydroxy (audio)
: containing more than one hydroxyl group in the molecule
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