retinoid

noun

ret·​i·​noid ˈre-tə-ˌnȯid 

: any of various synthetic or naturally occurring analogs of vitamin A

Examples of retinoid in a Sentence

Recent Examples on the Web

For women in their 50s who have never used a retinoid — or who tried one years ago and gave up after irritation — a slow introduction is key. —Lauren Jarvis-Gibson, Kansas City Star, 27 Apr. 2026

Starting retinoids in your 40s gives your skin time to acclimate before the deeper structural changes of your 50s. —Lauren Jarvis-Gibson, Sacbee.com, 24 Apr. 2026

For people in their 50s who are also using retinoids or vitamin C, sunscreen protects those active ingredients from being undermined by sun exposure. —Lauren Jarvis-Gibson, Fort Worth Star-Telegram, 24 Apr. 2026

If prevention is the strategy, sleep position belongs in the conversation alongside SPF and retinoids. —Allison Palmer, Miami Herald, 9 Apr. 2026

Word History

First Known Use

1976, in the meaning defined above

Medical Definition

retinoid

noun

ret·​i·​noid ˈret-ᵊn-ˌȯid 

: any of various synthetic or naturally occurring analogs of vitamin A

retinoid adjective