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.
That said, the evolution aspect of the formula is in its skin-loving ingredients like peptides, niacinamide, and microgreens for skin-smoothing and oil-balancing benefits. — Conçetta Ciarlo, Vogue, 28 Aug. 2026 The narrow harvest window and vitamin C plus niacinamide combination are what set it apart from other brightening serums on shelves. — Lauren Jarvis-Gibson, Sacbee.com, 26 Aug. 2026 BePlain pairs mung bean seed extracts with niacinamide, glycerin and hyaluronic acid, Lee writes in a separate Allure piece; Medicube foregrounds collagen, squalene and niacinamide, per the New York Post’s Victoria McDonnell. — Lauren Jarvis-Gibson, Miami Herald, 26 Aug. 2026 The lightweight formula is packed with vitamin E and niacinamide to plump and smooth your complexion while simultaneously protecting it. — Kara Jillian Brown, InStyle, 26 Aug. 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 2 Sep. 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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