electrostethograph

e·lec·tro·steth·o·graph

(ē-lek'trō-steth'ō-graf),
Electrical instrument that amplifies or records the respiratory and cardiac sounds of the chest.
[electro- + G. stēthos, chest, + graphō, to record]

e·lec·tro·steth·o·graph

(ĕ-lek'trō-steth'ō-graf)
Electrical instrument that amplifies or records chest respiratory and cardiac sounds.
[electro- + G. stēthos, chest, + graphō, to record]