niacinamide

noun

ni·​a·​cin·​amide ˌnī-ə-ˈsi-nə-ˌmīd How to pronounce niacinamide (audio)
: a compound C6H6N2O of the vitamin B complex found especially as a constituent of coenzymes and used similarly to niacin

called also nicotinamide

Examples of niacinamide in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Several forms of hyaluronic acid draw in moisture, while niacinamide helps regulate oil production and improve uneven tone. — Christa Joanna Lee, Allure, 28 Oct. 2026 The formula combines heptapeptide-7 with niacinamide to help improve uneven tone, plus ceramides and bifidus ferment to support the skin barrier. — Taylor Lane, Flow Space, 28 Oct. 2026 Enriched with the brand’s proprietary Melasyl, which has been clinically shown to reduce dark spots and dark patches, the formula also has vitamin C and niacinamide. — Jenny Berg, Vogue, 27 Oct. 2026 The best ones featured skin-perfecting ingredients like retinol, ceramides, glycerin, niacinamide, peptides, collagen, and caffeine to smooth and firm skin. — Alanna Martine Kilkeary, Glamour, 26 Oct. 2026 See All Example Sentences for niacinamide

Word History

First Known Use

1942, in the meaning defined above

Time Traveler
The first known use of niacinamide was in 1942

Rhymes for niacinamide

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Browse Nearby Words

niacin
niacinamide
Niagara
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Cite this Entry

“Niacinamide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/niacinamide. Accessed 1 Nov. 2026.

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Kids Definition

niacinamide

noun
ni·​a·​cin·​amide ˌnī-ə-ˈsin-ə-ˌmīd How to pronounce niacinamide (audio)
: a compound of the vitamin B complex that is used like niacin

Medical Definition

niacinamide

noun
ni·​a·​cin·​amide ˌnī-ə-ˈsin-ə-ˌmīd How to pronounce niacinamide (audio)
: a bitter crystalline basic amide C6H6N2O that is a member of the vitamin B complex and is formed from and converted to niacin in the living organism, that occurs naturally usually as a constituent of coenzymes, and that is used similarly to niacin

called also nicotinamide

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