[ ploo r-uh ]
/ ˈplʊər ə /

noun, plural pleu·rae [ploo r-ee] /ˈplʊər i/ for 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.
plural of pleuron.

Nearby words

  1. plethysmogram,
  2. plethysmograph,
  3. plethysmometry,
  4. pleugh,
  5. pleur-,
  6. pleurae,
  7. pleural,
  8. pleural cavity,
  9. pleural fluid,
  10. pleural fremitus

Origin of pleura

1655–65; < New Latin < Greek pleurá (singular) side, rib


[ ploo r-on ]
/ ˈplʊər ɒn /

noun, plural pleu·ra [ploo r-uh] /ˈplʊər ə/. Entomology.

the lateral plate or plates of a thoracic segment of an insect.

Origin of pleuron

First recorded in 1700–10, pleuron is from the Greek word pleurón rib, (plural) side Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for pleura

British Dictionary definitions for pleura


/ (ˈplʊərə) /

noun plural pleurae (ˈplʊəriː)

the thin transparent serous membrane enveloping the lungs and lining the walls of the thoracic cavity
the plural of pleuron
Derived Formspleural, adjective

Word Origin for pleura

C17: via Medieval Latin from Greek: side, rib


/ (ˈplʊərɒn) /

noun plural pleura (ˈplʊərə)

the part of the cuticle of arthropods that covers the lateral surface of a body segment

Word Origin for pleuron

C18: from Greek: side

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 pleura



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

Medicine definitions for pleura


[ plurə ]

n. pl. pleu•rae (plurē)

The thin serous membrane that envelops each lung and folds back to make a lining for the chest cavity.
Related formspleural adj.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for pleura


[ plurə ]

Plural pleurae (plurē)

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