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foramen magnum

[mag-nuh m] /ˈmæg nəm/
noun, Anatomy
1.
the large opening in the base of the skull forming the passage from the cranial cavity to the spinal canal.
Origin
1880-1885
1880-85; < New Latin: literally, great hole
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for foramen magnum
  • The same goes for the position of the foramen magnum.
  • The mid-point of the posterior margin of the foramen magnum.
  • The mid-point of the anterior margin of the foramen magnum.
  • Occasionally, they extend into the basilar part of the occipital nearly as far as the foramen magnum.
  • The spinal cord enters high on the skull through a hole called the foramen magnum.
  • The hole at the bottom of the skull where the spinal cord exits, known as the foramen magnum, is one clue.
  • The cord is continuous with the medulla oblongata at the foramen magnum.
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
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foramen magnum in Medicine

foramen magnum foramen mag·num (māg'nəm)
n.
See great foramen.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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