The Collaborative International Dictionary
Exocardial
Exocardiac \Ex`o*car"di*ac\, Exocardial \Ex`o*car"di*al\, a. [Exo- + Gr. kardi`a heart.] (Anat.) Situated or arising outside of the heart; as, exocardial murmurs; -- opposed to endocardiac.
Wiktionary
exocardial
a. (context anatomy English) Situated or arising outside of the heart.