heart sound; cardiac sound
Medical term for the sounds produced by the beating heart, such as S1 and S2. Used in clinical contexts.
The doctor checked the heart sounds with a stethoscope.
Normal heart sounds are heard as 'lub-dub'.
phonocardiogram; PCG
Compound of 心 (shin, 'heart') and 音 (on, 'sound'). A straightforward Sino-Japanese medical term.