- pl. -·rae the thin serous membrane that covers a lung and lines the chest cavity in mammals
Origin of pleuraMedieval Latin ; from Gr, rib, side
A thin serous membrane in mammals that envelops each lung and folds back to make a lining for the chest cavity.
Origin of pleuraMiddle English, from Medieval Latin, from Greek, side, rib.
Plural of pleuron.
Ancient Greek Ï€Î»ÎµÏ…ÏÎ¬ (pleura, “a rib, a side of something").