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

The lightweight, toner-meets-serum formula also layers in niacinamide and adenosine for anyone chasing a bouncy, healthy glow. —Christa Joanna Lee, Allure, 18 June 2026

The niacinamide in this formula simultaneously shrinks pores, smooths wrinkles, and improves uneven texture. —Tamim Alnuweiri, InStyle, 16 June 2026

Antioxidants like vitamin C in the morning under SPF, and niacinamide, which is well-tolerated and genuinely multifunctional. —Allison Palmer updated June 13, Miami Herald, 13 June 2026

The formula features niacinamide, which helps support a more balanced-looking complexion and can reduce the appearance of excess oil over time, alongside ectoin, a barrier-supporting ingredient that helps defend against environmental stressors. —Iman Balagam, Vogue, 12 June 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