noun
foramen magnum
Anatomical term for the large opening at the base of the skull through which the spinal cord passes.
大後頭孔は頭蓋骨の底部にある大きな穴です。
The foramen magnum is a large opening at the base of the skull.
Compound of 大 (large), 後頭 (occipital), and 孔 (opening). The term is a direct translation of the Latin 'foramen magnum'.