What does epicardial mean?
Epicardial is a medical adjective relating to the epicardium, the membrane that covers the surface of the heart. It appears in descriptions of anatomy and disease involving the heart's outer layer, including epicardial fat, epicardial arteries, and the epicardial surface. In clinical and research writing, the word distinguishes structures directly associated with the heart's exterior from those of the deeper myocardium or the surrounding pericardial sac. Although the term is specialized, it follows a familiar English pattern: words such as cardiac and pericardial are built from the Latin word for heart, while epicardial specifically identifies the epicardium. For general readers, the most useful way to remember it is to associate it with the heart's outer covering rather than with the heart muscle itself.
adjectiveRelating to or situated on the epicardium, the membrane covering the surface of the heart. The term is also used for tissues, vessels, and other structures associated with this layer.
- Relating to or situated on the epicardium, the membrane covering the surface of the heart.
"The scan revealed a thin layer of epicardial fat surrounding the heart."
"Epicardial fat surrounds several major coronary vessels."
"The surgeon carefully inspected the epicardial surface before proceeding."
The heart has an outside address, and 'epicardial' is the word for what belongs to it.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does epicardial come from?
Epicardial was formed in English from epicardium with the adjective suffix -al. Epicardium combines Greek epi-, meaning 'upon' or 'outside,' with kardia, meaning 'heart,' reflecting the structure's position on the heart's surface. The same Latin heart root also appears in pericardium, pericardial, and cardiac, although these related words have distinct anatomical meanings.
Related word forms
How epicardial is actually used
This is primarily a formal medical and anatomical term, especially common in cardiology, surgery, and imaging. It is an adjective and is not normally used as a noun.
Easily confused with epicardial
Epicardial refers specifically to the epicardium, the membrane on the heart's surface, whereas pericardial more broadly relates to the pericardium, the surrounding sac that encloses the heart.