Foramen magnum: The large hole at the base of the skull which allows passage of the spinal cord.
Library > Literature & Language > Dictionary n. The large orifice in the base of the skull through which the spinal cord passes to the cranial cavity and becomes ...
foramen /fo·ra·men/ (fo-ra´men) pl. fora´mina [L.] a natural opening or passage, especially one into or through a bone. aortic foramen aortic hiatus.
Brief and Straightforward Guide: What Is the Foramen Magnum?
noun Anatomy . the large opening in the base of the skull forming the passage from the cranial cavity to the spinal canal. Origin: 1880–85; < Neo-Latin: literally ...
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