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.
The gel-cream combines hyaluronic acid, niacinamide, panthenol, and squalane to hydrate and soothe without feeling greasy. — Christa Joanna Lee, Allure, 24 June 2026 Enriched with zinc oxide, niacinamide, and vitamin E for a visibly smoother, more even complexion. — ABC News, 2 July 2026 Plus, glycerin, collagen, and niacinamide to tighten fine lines, improve firmness, and restore hydration, so the skin looks plump and supple. — Reece Andavolgyi, InStyle, 3 July 2026 The formula also includes hydrating hyaluronic acid for a plump texture, plus niacinamide to soothe the skin and keep any irritation from retinoids at bay. — Caley Sturgill, Southern Living, 26 June 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

See All Rhymes for niacinamide

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 7 Jul. 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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