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

mitral valve

noun

Definition of mitral valve

  1. :  a cardiac valve consisting of two triangular flaps which allow only unidirectional blood flow from the left atrium to the left ventricle —called also bicuspid valve



1696

First Known Use of mitral valve

1696

Rhymes with mitral valve


Medical Dictionary

mitral valve

noun

Medical Definition of mitral valve

  1. :  a valve in the heart that guards the opening between the left atrium and the left ventricle, prevents the blood in the ventricle from returning to the atrium, and consists of two triangular flaps attached at their bases to the fibrous ring which surrounds the opening and connected at their margins with the ventricular walls by the chordae tendineae and papillary muscles—called also bicuspid valve, left atrioventricular valve




Learn More about mitral valve


Seen and Heard

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

WORD OF THE DAY

February 7, 2016

a slight offense

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image1037863653

Which of the following refers to thin, bending ice, or to the act of running over such ice?

pince-nez duvet kittly-benders spindrift
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.

TAKE THE QUIZ
SCRABBLE® Sprint

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

TAKE THE QUIZ