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

Peptides, silver mushroom, niacinamide, and a few proprietary complexes make this a firming, lifting, tightening, plumping, and hydrating powerhouse. —Tamim Alnuweiri, InStyle, 13 Apr. 2026

Hyaluronic acid, peptides or niacinamide can support repair and hydration overnight. —Kansas City Star, 8 Apr. 2026

Hyaluronic acid, peptides or niacinamide all work well for overnight repair and hydration. —Lauren Jarvis-Gibson, Miami Herald, 8 Apr. 2026

The formula is infused with hydrating ingredients like glycerin and vitamin B3 (niacinamide), which help improve skin’s moisture levels and support a smoother, more supple appearance over time. —Deanna Pai, Glamour, 7 Apr. 2026

Word History

First Known Use

1942, in the meaning defined above

Rhymes for niacinamide

• acrylamide
• procainamide
• sulfonamide
• sulphonamide
• acetazolamide
• polyacrylamide
• 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