syndrome X

noun
\ -ˈeks How to pronounce syndrome X (audio) \

Medical Definition of syndrome X

1 : angina pectoris of a usually benign form in which the coronary arteriogram is normal
2 : metabolic syndrome Metabolic syndrome, sometimes called syndrome X, was first defined in 1988 as a collection of health risks that may increase the chances of developing cardiovascular disease two-and-a-half to four times, and diabetes by four to six times.— Catherine Arnst, Business Week, 10 Oct. 2005

Learn More about syndrome X

Cite this Entry

“Syndrome X.” The Merriam-Webster.com Medical Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/medical/syndrome%20X. Accessed 28 January 2020.

Comments on syndrome X

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

WORD OF THE DAY

showing steady, earnest care and effort

Get Word of the Day daily email!

Test Your Vocabulary

Intact Latin Quiz

  • roman tablet
  • What did focus mean in Latin?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Add Diction

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

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!