endocardiac

from The Collaborative International Dictionary of English v.0.48

Endocardiac \En`do*car"di*ac\, Endocardial \En`do*car"di*al\, a.
   1. Pertaining to the endocardium.
      [1913 Webster]

   2. (Med.) Seated or generated within the heart; as,
      endocardial murmurs.
      [1913 Webster]