retinoid
retinoid Lexical Profile
retinoid Game Scores & Validity
• noun
Any of a class of chemical compounds that are vitamers of vitamin A or are chemically related to it, widely used in medicine and dermatology to regulate epithelial cell growth and treat skin conditions.
"The dermatologist prescribed a topical retinoid to help clear the patient's persistent acne."
• adjective
Relating to, derived from, or chemically resembling vitamin A or a retinoid.
"Topical retinoid creams are frequently prescribed to accelerate cellular turnover."
Resembling the retina of the eye or resin in structure or appearance.
"Under the microscope, the tissue displayed a distinct retinoid arrangement of cells."
Word Nuance & Usage
In dermatology and skincare, "retinoid" is the broad umbrella term for all vitamin A derivatives (including prescription drugs like tretinoin), whereas "retinol" refers specifically to a milder, over-the-counter subtype within the retinoid family.
Word Origin & Etymology
Coined in the 19th century regarding the retina, and later readopted in 1976 in biochemistry from "retinol" (vitamin A, so named because of its role in the retina of the eye) + "-oid" (resembling).