epicardium

noun

epi·​car·​di·​um ˌe-pə-ˈkär-dē-əm How to pronounce epicardium (audio)
plural epicardia ˌe-pə-ˈkär-dē-ə How to pronounce epicardium (audio)
: the inner layer of the pericardium that closely envelops the heart
epicardial adjective

Examples of epicardium in a Sentence

Recent Examples on the Web 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 However, collagen 12 cells were found exclusively in the epicardium. Monica Cull, Discover Magazine, 22 July 2022 The organoids are about 2 millimeters in diameter and include the main types of cells typically present in this stage of development: cardiomyocytes, epithelial cells, fibroblasts, and epicardium. Sofia Moutinho, Science | AAAS, 20 May 2021

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

Word History

Etymology

New Latin

First Known Use

circa 1860, in the meaning defined above

Time Traveler
The first known use of epicardium was circa 1860

Dictionary Entries Near epicardium

Cite this Entry

“Epicardium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/epicardium. Accessed 29 Mar. 2024.

Medical Definition

epicardium

noun
epi·​car·​di·​um -ē-əm How to pronounce epicardium (audio)
plural epicardia -ē-ə How to pronounce epicardium (audio)
: the visceral part of the pericardium that closely envelops the heart

called also visceral pericardium

compare parietal pericardium

More from Merriam-Webster on epicardium

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