foramen magnum [mag-nuh m] Word Origin noun Anatomy.
- the large opening in the base of the skull forming the passage from the cranial cavity to the spinal canal.
Origin of foramen magnum 1880–85; New Latin: literally, great hole British Dictionary definitions for foramen magnum foramen magnum noun
- the large opening at the base of the skull through which the spinal cord passes
Word Origin for foramen magnum New Latin: large hole foramen magnum in Medicine foramen magnum [măg′nəm] n.
- great foramen