• synonyms


[ploo r-uh]
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noun, plural pleu·rae [ploo r-ee] /ˈplʊər i/ 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.
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Origin of pleura

1655–65; < New Latin < Greek pleurá (singular) side, rib
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words


Examples from the Web for pleurae

Historical Examples

  • There is probably very little difference in the lower level of the pleurae on the two sides.

    Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 6


  • After the pericardium and pleurae have been separated off the remainder of the coelom becomes the peritoneum.

British Dictionary definitions for pleurae


noun plural pleurae (ˈplʊəriː)
  1. the thin transparent serous membrane enveloping the lungs and lining the walls of the thoracic cavity
  2. the plural of pleuron
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Derived Formspleural, 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

Word Origin and History for pleurae



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

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Online Etymology Dictionary, © 2010 Douglas Harper

pleurae in Medicine


n. pl. pleu•rae (plurē)
  1. The thin serous membrane that envelops each lung and folds back to make a lining for the chest cavity.
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Related formspleural adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

pleurae in Science


Plural pleurae (plurē)
  1. A membrane that encloses each lung and lines the chest cavity.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.