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

Glycerin and squalane hydrate, while niacinamide and colloidal oatmeal soothe inflamed skin. —Jessica Kasparian, SELF, 18 Apr. 2025

The formula combines powerful but gentle ingredients like tranexamic acid, kojic acid, and niacinamide to tackle dark spots, acne scars, and uneven tone. —Christa Joanna Lee, Allure, 15 Apr. 2025

Infused with hyaluronic acid—a mainstay in wrinkle-filling—the serum also has niacinamide, which refines the pores while strengthening the skin barrier. —Jenny Berg, Vogue, 15 Apr. 2025

Key ingredients: Aloe, niacinamide, hyaluronic acid, green tea, bisabolol, vitamin E / Fragrance: Yes / Size: 6 oz. —Marilyn La Jeunesse, Glamour, 14 Apr. 2025

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