aortic dissection

noun

Medical Definition of aortic dissection

: a pathological splitting of the middle layer (media) of the aorta following penetration of blood through the inner layer (intima) Early symptoms of aortic dissection are similar to those of a heart attack: severe, persistent chest pain of sudden onset but with the pain moving to the back and occasionally to the abdomen and hips.— Allen Douma, The Chicago Tribune, 1 Sept. 2002 Aortic dissection classically begins with a tear in the aortic intima that exposes a diseased medial layer to the systemic pressure of intraluminal blood. — Eric M. Isselbacher, in Cecil Textbook of Medicine, 22nd edition, 2004

Learn More about aortic dissection

Cite this Entry

“Aortic dissection.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/aortic%20dissection. Accessed 11 Aug. 2020.

Comments on aortic dissection

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

WORD OF THE DAY

Test Your Vocabulary

Original Meanings Quiz

  • rembrandt painting a young scholar and his tutor
  • Which of the following is the earliest known sense of the word awe?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Syn City

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!