pericardial cavity(n = noun.body) pericardial space - the space between the layers of the pericardium that contains fluid that lubricates the membrane surfaces and allows easy heart movement;
is a kind of bodily cavity, cavity, cavum

abdominal cavity, amniotic cavity, axillary cavity, bodily cavity, buccal cavity, cavity, cavity resonator, cavity wall, chest cavity, cleavage cavity, cotyloid cavity, cranial cavity, glenoid cavity, intracranial cavity, lesser peritoneal cavity, nasal cavity, oral cavity, orbital cavity, pelvic cavity, pericardial, pericardial sac, pericardial space, pericardial vein, peritoneal cavity, pleural cavity, pulp cavity, segmentation cavity, thoracic cavity, tubular cavity, tympanic cavity, uterine cavity