[mez-uh-kahr-dee-uh m, mes-, mee-zuh-, -suh-]
noun, plural mes·o·car·di·a [mez-uh-kahr-dee-uh, mes-, mee-zuh-, -suh-] /ˌmɛz əˈkɑr di ə, ˌmɛs-, ˌmi zə-, -sə-/. Embryology.
  1. the double layer of splanchnic mesoderm supporting the embryonic heart.

Origin of mesocardium Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

mesocardia in Medicine


  1. An atypical central position of the heart in the chest, as in the embryo.


n. pl. mes•o•car•di•a (-dē-ə)
  1. Either of the two layers of the embryonic mesentery supporting the embryonic heart in the pericardial cavity.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.