だい後頭 こうとう こうじゃなかったです
daikōtōkōjanakattadesu

Noun
Desu Copula

The polite, past negative form of 大後頭孔

1. Wasn't the foramen magnum.; Wasn't the occipital foramen.

Past/Perfective
Negative
Polite
Casual Register
Anatomy