What does pericardia mean?
The pericardia are the membranous sacs that surround the heart and the roots of the great blood vessels. The term is the plural of the more familiar singular noun pericardium. Anatomically, the pericardium consists of two closely related layers: a fibrous outer layer that helps anchor the heart and limits motion, and a serous inner layer that reduces friction as the heart beats. Although its literal plural is correct, medical writing generally uses pericardium to refer to the sac or its tissues, including in descriptions of inflammation, fluid accumulation, injury, and disease. Pericardia appears most often in anatomical descriptions, research literature, and comparative studies involving the heart. The word is technical rather than literary or everyday, but it is useful when precision matters because it clearly identifies the protective membranes immediately surrounding the heart.
plural nounThe plural of pericardium: the membranous sacs enclosing the heart and the roots of the great blood vessels.
- The plural form of pericardium, denoting the membranous sacs that enclose the heart and the roots of the great vessels.
"The surgeon examined the pericardia before opening the chest cavity."
"Anatomical imaging revealed fluid surrounding the pericardia."
"Descriptions of the disease mention thickening and inflammation of the pericardia in severe cases."
The regular plural of pericardium, used in anatomical contexts.
"The infection had spread to the pericardia."
The heart comes packaged in a snug, double-walled sac—the pericardium—whose plural is pericardia.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does pericardia come from?
Pericardia is the Latin plural of pericardium, a term derived from Greek perikardion. The Greek elements peri- meaning “around” and kardia meaning “heart” reflect the structure’s position surrounding the heart. English borrowed the medical term through New Latin, and related words such as cardiac and cardiology preserve the same ancient Greek root.
How pericardia is actually used
This is a specialized anatomical plural and is uncommon outside medical and biological contexts. In clinical usage, pericardium is normally used for the structure in general rather than a numbered or multiple-sac sense.
Easily confused with pericardia
Pericardium is the singular name for the membranous sac surrounding the heart, whereas pericardia is its plural.
Pericarditis is inflammation of the pericardium, while pericardia simply refers to the anatomical sacs.