noun
heart valve
Anatomical term for the valves of the heart, such as the mitral or aortic valve.
心臓弁膜の異常が見つかった。
An abnormality of the heart valve was found.
Compound of 心臓 (heart) + 弁膜 (valve membrane). The exact historical derivation is uncertain; the spelling is conventionally associated with the medical meaning.