foramen magnum Hear it!

foramen magnum definition

foramen mag·num (mag′nəm)

the opening at the base of the skull where the spinal cord merges with the medulla oblongata

Etymology: ModL, large opening

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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