Chinese

Noun

心音

1. (physiology) heart sound; cardiac sound
2. Alternative term for 心聲／心声 (xīnshēng).

Japanese

Noun

心音 ‎(hiragana しんおん, romaji shin'on)

1. (the sound of one's) heartbeat

References

• 2002, Ineko Kondō; Fumi Takano; Mary E Althaus; et. al., Shogakukan Progressive Japanese-English Dictionary, Third Edition, Tokyo: Shōgakukan, ISBN 4095102535.