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foramen magnum

[mag-nuh m]
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noun Anatomy.
  1. 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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for foramen magnum

foramen magnum

noun
  1. the large opening at the base of the skull through which the spinal cord passes

Word Origin

New Latin: large hole
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

foramen magnum in Medicine

foramen magnum

(măgnəm)
n.
  1. great foramen