noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   The layer of tissue between the pericardium and the heart.
2. 2
   the innermost of the two layers of the pericardium wordnet

Synonyms

All synonyms

visceral pericardium

Etymology

New Latin, from Latin epi- (“over”) + Ancient Greek καρδία (kardía, “heart”). Attested in English from the 19th century.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.