- hemiacardius
- One of twin fetuses, in which only a part of the circulation is effected by its own heart, the rest by the heart of the other twin. [hemi- + G. a- priv. + kardia, heart]
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hemi·acar·di·us (hem″e-ə-kahrґde-əs) [hemi- + acardius] one of twin fetuses in which only a part of the circulation is accomplished by its own heart.
Medical dictionary. 2011.