tricuspid valve


: a valve of three flaps that prevents reflux of blood from the right ventricle to the right atrium

Examples of tricuspid valve in a Sentence

Recent Examples on the Web My experience is that the tricuspid valve rarely causes problems by itself, but can sometimes get leaky if the heart is enlarged overall, such as in someone with longstanding high blood pressure or with heart failure. Dr. Keith Roach, oregonlive, 3 Mar. 2023 The defect, which affects the tricuspid valve — the valve that sits between the two right heart chambers — has left her with lung disease and severe chronic pulmonary hypertension. Eric Todisco,, 6 Jan. 2020 Tinslee was born with Ebstein Anomaly, which, according to Cincinnati Children’s Hospital, is an abnormality in the tricuspid valve, which separates the right atrium from the right ventricle, and affects normal blood flow. Fox News, 12 Nov. 2019 Interventricular septum, tricuspid valve, papillary muscles. Megan Stielstra, Longreads, 19 Apr. 2018

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'tricuspid valve.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1670, in the meaning defined above

Time Traveler
The first known use of tricuspid valve was in 1670

Dictionary Entries Near tricuspid valve

Cite this Entry

“Tricuspid valve.” Dictionary, Merriam-Webster, Accessed 29 Sep. 2023.

Kids Definition

tricuspid valve

tri·​cus·​pid valve
: a valve on the right side of the heart between the atrium and the ventricle that has three flaps and prevents the backward flow of blood from the ventricle to the atrium

Medical Definition

tricuspid valve

: a valve that is situated at the opening of the right atrium of the heart into the right ventricle and that resembles the mitral valve in structure but consists of three triangular membranous flaps

called also right atrioventricular valve

More from Merriam-Webster on tricuspid valve

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!