Retin-A

[ ret-n-ey ]
/ ˌrɛt nˈeɪ /

Pharmacology, Trademark.

a brand of tretinoin, used especially to reduce wrinkles caused by overexposure to the sun.

QUIZZES

ELEMENTARY SCHOOL PUNCTUATION QUIZ

Punctuation marks help make writing easy to read and understand. Some of the most important ones are the period (.), comma (,), question mark (?), and exclamation point (!). How well do you know how to use them? Find out in this quiz!
Question 1 of 10
Which punctuation mark is best for this sentence? "Can I watch a movie __"

Origin of Retin-A

First recorded in 1975–80
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020