pectoralis major

(anatomy) The large muscle that covers the chest and ribs.

Japanese Meaning

大胸筋：胸部と肋骨を覆う大きな筋肉

During the dissection class, the professor pointed out the pectoralis major covering the upper ribs.

解剖学の授業中、教授は上部の肋骨を覆う大胸筋を指し示した。

Sense（1）

(anatomy) The large muscle that covers the chest and ribs.

pectoralis majors

（ plural ）

pectorales majores

（ plural ）