mitral valve

American  

noun

Anatomy.

1. the valve between the left atrium and left ventricle of the heart, consisting of two triangular flaps of tissue, that prevents the blood from flowing back into the atrium.

---

mitral valve British  

noun

1. Also called: bicuspid valve.  the valve between the left atrium and the left ventricle of the heart, consisting of two membranous flaps, that prevents regurgitation of blood into the atrium

---

mitral valve Scientific  

/ mī′trəl /

1. A valve of the heart, composed of two triangular flaps, that is located between the left atrium and left ventricle. The mitral valve regulates blood flow between the two chambers.

---

Etymology

Origin of mitral valve

First recorded in 1685–95

Example Sentences

See Examples For:

mitral valve

The results broadened the concern beyond isolated thickening of the mitral valve, although animal findings cannot determine what happens in people taking standard doses of antidepressants.

From Science Daily ● Jul. 12, 2026

"Promptly fixing a mitral valve that is very leaky would protect the heart and could prevent congestive heart failure."

From Science Daily ● Jul. 12, 2026

The team reviewed clinical information from more than 9,000 patients who had undergone mitral valve repair or replacement for DMR.

From Science Daily ● Jul. 12, 2026

But research published in 2023 suggests this chemical messenger may also influence a small structure that performs a vital job during every heartbeat: the mitral valve.

From Science Daily ● Jul. 12, 2026

Two or three membranous flaps, held by numerous chordae tendineae, form a true mitral valve, and allow the blood to pass through the left ostium atrioventriculare.

From Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 7 "Bible" to "Bisectrix" by Various