endocardium

noun

en·​do·​car·​di·​um ˌen-dō-ˈkär-dē-əm How to pronounce endocardium (audio)
plural endocardia ˌen-dō-ˈkär-dē-ə How to pronounce endocardium (audio)
: a thin serous membrane lining the cavities of the heart

Examples of endocardium in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
One in the outer layer — epicardium — of the heart and the other in the inner layer — endocardium — of the heart. Monica Cull, Discover Magazine, 22 July 2022

Word History

Etymology

New Latin

First Known Use

circa 1864, in the meaning defined above

Time Traveler
The first known use of endocardium was circa 1864

Dictionary Entries Near endocardium

Cite this Entry

“Endocardium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/endocardium. Accessed 1 Dec. 2024.

Medical Definition

endocardium

noun
en·​do·​car·​di·​um -ˈkärd-ē-əm How to pronounce endocardium (audio)
plural endocardia -ē-ə How to pronounce endocardium (audio)
: a thin serous membrane lining the cavities of the heart

More from Merriam-Webster on endocardium

Love words? Need even more definitions?

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