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Pronunciation: mez'o-kar'de-um, mez'o-kar'de-a

Definition: The double layer of splanchnic mesoderm supporting the embryonic heart in the pericardial cavity. It disappears before birth.

[meso- + G. kardia, heart]

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.