Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

isotretinoin

play
noun iso·tret·i·noin \ˌī-sō-ˈtre-tə-ˌnȯin\

Definition of isotretinoin

  1. :  a cis isomer of retinoic acid that is a synthetic derivative of vitamin A, inhibits sebaceous gland function and keratinization, and is used in the treatment of severe inflammatory acne



1980

First Known Use of isotretinoin

1980


Medical Dictionary

isotretinoin

play
noun iso·tret·i·noin \ˌī-sō-ˈtret-ə-ˌnȯin\

Medical Definition of isotretinoin

  1. :  a cis isomer of retinoic acid that is a synthetic derivative of vitamin A, that inhibits sebaceous gland function and keratinization, and that is administered in the treatment of severe inflammatory acne but is contraindicated in pregnancy because of its implication as a cause of birth defects—called also , ; see accutane




Learn More about isotretinoin

  1. Medical Dictionary: Definition of "isotretinoin"


Seen and Heard

What made you want to look up isotretinoin? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

immature or lacking adult sophistication

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image567572573

Which of these is a synonym of unctuous?

prompt maudlin angry oily
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ