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.

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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

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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.

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Etymology

Origin of mitral valve

First recorded in 1685–95

Example Sentences

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

From Barron's • Sep. 26, 2025

To better understand the mitral valve in healthy and diseased states, the team built a biorobotic heart based on a pig heart.

From Science Daily • Jan. 10, 2024

The clipping device used is similar to a successful one used to treat patients with damage to another part of the heart, the mitral valve.

From New York Times • Mar. 4, 2023

The mitral valve separates the left ventricle from the left atrium.

From Textbooks • Jun. 9, 2022

The left-side valve is the mitral valve, that between the right auricle and ventricle the tricuspid valve.

From How it Works Dealing in simple language with steam, electricity, light, heat, sound, hydraulics, optics, etc., and with their applications to apparatus in common use by Williams, Archibald