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) \

Definition of epicardium

: the inner layer of the pericardium that closely envelops the heart

Other Words from epicardium

epicardial \ ˌe-​pə-​ˈkär-​dē-​əl How to pronounce epicardium (audio) \ adjective

Examples of epicardium in a Sentence

Recent Examples on the Web 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 example sentences are selected automatically from various online news sources to reflect current usage of the word 'epicardium.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of epicardium

circa 1860, in the meaning defined above

History and Etymology for epicardium

New Latin

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Time Traveler for epicardium

Time Traveler

The first known use of epicardium was circa 1860

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Dictionary Entries Near epicardium

epicanthal fold



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Cite this Entry

“Epicardium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/epicardium. Accessed 14 Aug. 2022.

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More Definitions for epicardium


epi·​car·​di·​um | \ -ē-əm How to pronounce epicardium (audio) \
plural epicardia\ -​ē-​ə How to pronounce epicardium (audio) \

Medical Definition of epicardium

: the visceral part of the pericardium that closely envelops the heart

called also visceral pericardium

— compare parietal pericardium

More from Merriam-Webster on epicardium

Britannica.com: Encyclopedia article about epicardium


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