The Collaborative International Dictionary of English v.0.48:
Stethoscopic \Steth`o*scop"ic\, Stethoscopical \Steth`o*scop"ic*al\, a. [Cf. F. st['e]thoscopique.] Of or pertaining to a stethoscope; obtained or made by means of a stethoscope. -- Steth`o*scop"ic*al*ly, adv. [1913 Webster]