|fōnō+ noun
Etymology: International Scientific Vocabulary phon- + cardiogram
: a graphic record of heart sounds made by means of a microphone, amplifier, and galvanometer
|fōnō+ noun
Etymology: International Scientific Vocabulary phon- + cardiogram
: a graphic record of heart sounds made by means of a microphone, amplifier, and galvanometer
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012