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pericardium

[per-i-kahr-dee-uh m] /ˌpɛr ɪˈkɑr di əm/
noun, plural pericardia
[per-i-kahr-dee-uh] /ˌpɛr ɪˈkɑr di ə/ (Show IPA).
Anatomy
1.
the membranous sac enclosing the heart.
Origin
1570-1580
1570-80; < New Latin < Greek perikárdion, noun use of neuter of perikárdios surrounding the heart, equivalent to peri- peri- + kardios, adj. derivative of kardía heart; cf. -cardium
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for pericardium
  • Around the dark fluid was a bright white line, the pericardium.
British Dictionary definitions for pericardium

pericardium

/ˌpɛrɪˈkɑːdɪəm/
noun (pl) -dia (-dɪə)
1.
the membranous sac enclosing the heart
Derived Forms
pericardial, pericardiac, adjective
Word Origin
C16: via New Latin from Greek perikardion, from peri- + kardia heart
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 pericardium
n.

early 15c., Latinized form of Greek perikardion "(membrane) around the heart" (Galen), from peri (prep.) "around, about" (see peri-) + kardia "heart" (see heart). Related: Pericardiac.

Online Etymology Dictionary, © 2010 Douglas Harper
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pericardium in Medicine

pericardium per·i·car·di·um (pěr'ĭ-kär'dē-əm)
n. pl. per·i·car·di·a (-dē-ə)
The fibroserous sac enclosing the heart and the roots of the great vessels, consisting of two layers: the visceral layer or epicardium, immediately surrounding the heart; and the outer parietal layer, which forms the sac and is lined with a serous membrane. Also called heart sac, theca cordis.


per'i·car'di·al (-dē-əl) or per'i·car'di·ac' (-dē-āk') 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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pericardium in Science
pericardium
  (pěr'ĭ-kär'dē-əm)   
Plural pericardia
The membrane sac that encloses the heart in vertebrate animals.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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