- a drug chemically related to vitamin A, used as a topical ointment to treat skin disorders, especially acne.
Origin of tretinoin
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- An isomer of retinoic acid, used in the treatment of acne.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.