pleura

noun
pleu·ra | \ˈplu̇r-ə \
plural pleurae\ˈplu̇r-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

Other Words from pleura

pleural \ˈplu̇r-əl \ adjective

First Known Use of pleura

15th century, in the meaning defined above

History and Etymology for pleura

Middle English, from Medieval Latin, from Greek, rib, side

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The first known use of pleura was in the 15th century

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pleura

noun
pleu·ra | \ˈplu̇r-ə \
plural pleurae\ˈplu̇r-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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