Source : Webster's Revised Unabridged Dictionary (1913)

Precordial \Pre*cor"di*al\, a. [Pref. pre- + L. cor, cordis,
   heart: cf. F. pr['e]cordial.] (Anat.)
   Situated in front of the heart; of or pertaining to the
   pr[ae]cordia.

Source : WordNet®

precordial
     adj : in front of the heart; involving the precordium