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foramen magnum
[ mag-nuhm ]
noun
, Anatomy.
- the large opening in the base of the skull forming the passage from the cranial cavity to the spinal canal.
foramen magnum
noun
- the large opening at the base of the skull through which the spinal cord passes
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Word History and Origins
Origin of foramen magnum1
1880–85; < New Latin: literally, great hole
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Word History and Origins
Origin of foramen magnum1
New Latin: large hole
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Example Sentences
The foramen magnum, occipital condyles, and exoccipitals show no unusual features.
From Project Gutenberg
In a posterior view the foramen magnum and the four bones which surround it and together form the occipital segment are well seen.
From Project Gutenberg
The occipital segment consists of four cartilage bones, three of which together surround the foramen magnum.
From Project Gutenberg
Just external to the foramen magnum is a small foramen for the exit of the hypoglossal nerve (figs. 44 and 45, XII).
From Project Gutenberg
There are often a pair of prominent vacuities in the supra-occipital dorsal to the foramen magnum.
From Project Gutenberg
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