[ truh-tin-oh-in ]
/ trəˈtɪn oʊ ɪn /
a drug chemically related to vitamin A, used as a topical ointment to treat skin disorders, especially acne.
DISCOVER THE INFLUENCE OF PORTUGUESE ON ENGLISH VIA THIS QUIZ!
We’ve gathered some interesting words donated to English from Portuguese … as well as some that just don’t translate at all. Do you know what they mean?
Question 1 of 11
Which of the following animal names traces its immediate origin to Portuguese?
Words nearby tretinoin
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
Medical definitions for tretinoin
[ trĕt′n-oin′ ]
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.