Dictionary

tretinoin

noun tre·tin·o·in \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

tretinoin

noun tre·tin·o·in \tre-ˈtin-ə-wən\   (Medical Dictionary)

Medical Definition of TRETINOIN

:  the all-trans isomer of retinoic acid that is applied topically to the skin to treat acne vulgaris and to reduce facial wrinkles, roughness, and pigmented spots and that is administered orally to induce remission of acute myelogenous leukemia in which more than half the cells are malignant promyelocytes—called also all-trans-retinoic acid, retinoic acid, vitamin A acid; see isotretinoin, retin-a

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