noun pleu·ra \ˈplr-ə\
plural pleu·rae \ˈplr-ˌē, -ˌī\ or pleuras

Definition of PLEURA

:  the delicate serous membrane that lines each half of the thorax of mammals and is folded back over the surface of the lung of the same side
pleu·ral \ˈplr-əl\ adjective

Origin of PLEURA

Middle English, from Medieval Latin, from Greek, rib, side
First Known Use: 15th century

Rhymes with PLEURA

Medical Dictionary


noun pleu·ra \ˈplr-ə\
plural pleu·rae \ˈplr-ē\ or pleuras

Medical Definition of PLEURA

:  either of a pair of two-walled sacs of serous membrane each of which lines one lateral half of the thorax, has an inner visceral layer closely adherent to the corresponding lung, is reflected at the root of the lung to form a parietal layer that adheres to the walls of the thorax, the pericardium, the upper surface of the diaphragm, and adjacent parts, and contains a small amount of serous fluid that minimizes the friction of respiratory movements


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