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pleura

[ploo r-uh] /ˈplʊər ə/
noun, plural pleurae
[ploo r-ee] /ˈplʊər i/ (Show IPA),
for 1.
1.
Anatomy, Zoology. a delicate serous membrane investing each lung in mammals and folded back as a lining of the corresponding side of the thorax.
2.
plural of pleuron.
Origin
1655-1665
1655-65; < Neo-Latin < Greek pleurá (singular) side, rib
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for pleurae

pleura

/ˈplʊərə/
noun (pl) pleurae (ˈplʊəriː)
1.
the thin transparent serous membrane enveloping the lungs and lining the walls of the thoracic cavity
2.
the plural of pleuron
Derived Forms
pleural, adjective
Word Origin
C17: via Medieval Latin from Greek: side, rib
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for pleurae

pleura

n.

early 15c., medical Latin, from Greek pleura "side of the body, rib," also "flank of an army, page of a book," of unknown origin.

Online Etymology Dictionary, © 2010 Douglas Harper
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pleurae in Medicine

pleura pleu·ra (plur'ə)
n. pl. pleu·rae (plur'ē)
The thin serous membrane that envelops each lung and folds back to make a lining for the chest cavity.


pleu'ral adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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pleurae in Science
pleura
  (plr'ə)   
Plural pleurae (plr'ē)
A membrane that encloses each lung and lines the chest cavity.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Article for pleurae

pleura

membrane lining the thoracic cavity (parietal pleura) and covering the lungs (visceral pleura). The parietal pleura folds back on itself at the root of the lung to become the visceral pleura. In health the two pleurae are in contact. When the lung collapses, however, or when air or liquid collects between the two membranes, the pleural cavity or sac becomes apparent (see pleurisy). There are actually two pleural cavities, the right and the left; each constitutes a closed unit not connected to the other. The glistening surface of the pleura is made up of a sheet of flat cells, the mesothelium, which covers an underlying layer of loose elastic tissue. The pleura exudes a thin fluid that keeps it moist and lubricated.

Learn more about pleura with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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