tretinoin

tretinoin

[truh-tin-oh-in]
noun
a drug chemically related to vitamin A, used as a topical ointment to treat skin disorders, especially acne.

Origin:
1960–65; t(ri-) + retino- (< Greek rhētī́nē resin) + -in1

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American Heritage
Medical Dictionary

tretinoin tret·i·noin (trět'n-oin')
n.
An isomer of retinoic acid, used in the treatment of acne.

The American Heritage® Stedman's Medical Dictionary
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