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

Medical Dictionary

acanthosis nigricans

play play
noun acanthosis ni·gri·cans \-ˈnig-rə-ˌkanz, -ˈnī-grə-\

Medical Definition of acanthosis nigricans

  1. :  a skin condition that is marked by dark discoloration and velvety thickening of the skin especially of body folds or creases (as of the armpit, groin, or neck) and that is often associated with obesity, insulin resistance, hormonal irregularity, or medication use but may rarely occur as a sign of cancer (as of the stomach or liver)




Seen and Heard

What made you want to look up acanthosis nigricans? 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?

angry oily maudlin prompt
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