tretinoin
tre·tin·o·in
noun \tre-ˈti-nə-win\Definition of TRETINOIN
: the all-trans isomer of retinoic acid that is applied to the skin to treat severe acne and reduce facial wrinkles, roughness, and pigmented spots
Origin of TRETINOIN
perhaps from trans- + retinoic acid
First Known Use: 1980
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