retinol

noun

ret·​i·​nol ˈre-tə-ˌnȯl 

-ˌnōl

: the chief and typical vitamin A C₂₀H₂₉OH that is a highly unsaturated alicyclic alcohol used in various forms in medicine and nutrition

Examples of retinol in a Sentence

Recent Examples on the Web

Research shows bakuchiol and retinol are quite the dynamic duo, each ingredient working to boost the other’s effectiveness. —Elizabeth Mitchell Kadar, Glamour, 22 Jan. 2025

Try substituting less irritating sodium ascorbate for vitamin C and retinal for retinol or tretinoin. —Anna Giorgi, Verywell Health, 22 Jan. 2025

Harnessing firming ingredients such as peptides, retinol, and caffeine, many of the best body-firming lotions also deliver benefits that transcend tightening. —Jenny Berg, Vogue, 18 Jan. 2025

Founded in 2005, the innovation launched years before vitamin C and retinol were even on the average person’s radar. —Dahvi Shira, Forbes, 15 Jan. 2025

Word History

Etymology

retin- + -ol entry 1; from its being the source of retinal

First Known Use

1960, in the meaning defined above

Kids Definition

retinol

noun

ret·​i·​nol ˈret-ᵊn-ˌȯl 

-ˌōl

: the most common form of vitamin A

Medical Definition

retinol

noun

ret·​i·​nol ˈret-ᵊn-ˌȯl  -ˌōl 

: vitamin a sense a