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

Hyaluronic acid, ceramides and niacinamide are among the best partners for a midlife routine already leaning on barrier support. — Hanna Wickes, Fort Worth Star-Telegram, 16 Sep. 2026

Five percent niacinamide and antioxidant-rich laminaria extract brighten and even tone, while 5% gluconolactone, a sensitive-skin-friendly PHA, gently resurfaces for smoother, more reflective skin. — Emily Orofino, Allure, 15 Sep. 2026

It’s also loaded with ingredients such as ceramides, hyaluronic acid, and niacinamide that cultivate a youthful look while remedying the common signs of aging. — Sophie Dunne, Footwear News, 14 Sep. 2026

It’s formulated with hyaluronic acid, peptides, and niacinamide to promote hydration, increase collagen production, and visibly brighten skin. — Melony Forcier, InStyle, 10 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