niacinamide

noun

ni·​a·​cin·​amide ˌnī-ə-ˈsi-nə-ˌmīd 

: 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

Plus it’s made with niacinamide, panthenol, and peptides that will help hydrate and support your skin barrier. — Audrey Noble, Vogue, 21 Sep. 2026

Then, niacinamide and hyaluronic acid pull their weight to infuse moisture, plump the skin, and reduce the look of fine lines. — Olivia Cigliano, InStyle, 19 Sep. 2026

Olay Super Serum Body Wash for Normal Skin exfoliates with gentle beta-hydroxy acids (BHA) and leaves behind antioxidants (vitamins E and C, niacinamide) and collagen peptides to help skin stay smooth, nourished, and glowing. — Elizabeth Siegel, Allure, 17 Sep. 2026

The formula is packed with niacinamide to brighten and even tone, while watermelon and hyaluronic acid hydrate. — Mickey Williams, Flow Space, 17 Sep. 2026

Word History

First Known Use

1942, in the meaning defined above

Rhymes for niacinamide

• acetazolamide
• polyacrylamide
• acrylamide
• cyanamide
• procainamide
• sulfonamide
• sulphonamide
• amide
• nicotinamide
• sulfanilamide

Kids Definition

niacinamide

noun

ni·​a·​cin·​amide ˌnī-ə-ˈsin-ə-ˌmīd 

: 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 

: 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