sphenoid sinus

Noun

(anatomy) A paranasal sinus contained within the body of the sphenoid bone.

Japanese Meaning

蝶形骨の本体に含まれる副鼻腔

The surgeon carefully examined the sphenoid sinus to locate the source of the infection.

外科医は感染源を突き止めるために蝶形骨洞を慎重に調べた。

Sense（1）

(anatomy) A paranasal sinus contained within the body of the sphenoid bone.

sphenoid sinuses

（ plural ）