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

They suggest that the original mitral valve findings may reflect a broader biological pathway rather than an isolated observation.

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

Medicines can ease symptoms and help manage complications, but they cannot reverse the underlying degeneration of the mitral valve.

From Science Daily ● Jul. 12, 2026

It is moving into other areas of cardiovascular disease, such as mitral valve replacement and tricuspid valve replacement.

From Barron's ● Sep. 26, 2025

A similar process occurs on the right side of the heart, but here, instead of a mitral valve of two flaps between auricle and ventricle, we have a tricuspid valve with three.

From Text Book of Biology, Part 1: Vertebrata by Wells, H. G. (Herbert George)