[mahy-uh-kahr-dee-uh m]

noun, plural my·o·car·di·a [mahy-uh-kahr-dee-uh] /ˌmaɪ əˈkɑr di ə/. Anatomy.

the muscular substance of the heart.

Nearby words

  1. myocardiogram,
  2. myocardiograph,
  3. myocardiopathy,
  4. myocardiorraphy,
  5. myocarditis,
  6. myocardosis,
  7. myocele,
  8. myocellulitis,
  9. myocerosis,
  10. myoclonia

Origin of myocardium

First recorded in 1875–80; myo- + -cardium

Related formsmy·o·car·di·al, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for myocardium

British Dictionary definitions for myocardium


noun plural -dia (-dɪə)

the muscular tissue of the heart

Word Origin for myocardium

C19: myo- + cardium, from Greek 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

Word Origin and History for myocardium



1866, from myo- + Latinized form of Greek kardia "heart" (see heart). Related: Myocardial; myocarditis.

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for myocardium



n. pl. my•o•car•di•a (-dē-ə)

The middle layer of the heart, consisting of cardiac muscle.
Related formsmy′o•cardi•al adj.

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