Anatomical term for the lungs; more formal than 肺 (はい). Used in medical and biological contexts.
The lungs are the organs responsible for breathing.
喫煙は肺臓に悪影響を及ぼします。
Smoking has a negative effect on the lungs.
lung fluke (Paragonimus westermani)
Compound of 肺 (はい, 'lung') and 臓 (ぞう, 'internal organ'). The reading はいぞう is the standard on'yomi.