epicardium
noun
epi·car·di·um
ˌe-pə-ˈkär-dē-əm 
plural epicardia
ˌe-pə-ˈkär-dē-ə
: the inner layer of the pericardium that closely envelops the heart
Examples of epicardium in a Sentence
Recent Examples on the Web
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
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.
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
Cite this Entry
“Epicardium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/epicardium. Accessed 4 Nov. 2025.
Copy CitationMedical Definition
epicardium
noun
epi·car·di·um
-ē-əm
plural epicardia
-ē-ə
: the visceral part of the pericardium that closely envelops the heart
called also visceral pericardium
compare parietal pericardiumLove words? Need even more definitions?
Merriam-Webster unabridged
Share