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foramen magnum

   Also found in: Medical, Legal, Encyclopedia, Wikipedia 0.02 sec.
foramen magnum
n.
The large orifice in the base of the skull through which the spinal cord passes to the cranial cavity and becomes continuous with the medulla oblongata.
[New Latin formen magnum : Latin formen, opening + Latin magnus, large.]
foramen magnum
n
(Life Sciences & Allied Applications / Anatomy) the large opening at the base of the skull through which the spinal cord passes
[New Latin: large hole]
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.foramen magnumforamen magnum - the large opening at the base of the cranium through which the spinal cord passes
braincase, brainpan, cranium - the part of the skull that encloses the brain
foramen, hiatus - a natural opening or perforation through a bone or a membranous structure


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Emergency posterior fossa craniectomy and foramen magnum decompression were performed.
Acanthamoeba encephalitis in patient with systemic lupus, India by Visvesvara, Govinda S. / Emerging Infectious Diseases
The far lateral approach for ventrally placed foramen magnum and upper cervical spine tumours.
The carotid-vertebral space: an 'extended' lateral window to the ... by Carrau, Ricardo / Ear, Nose and Throat Journal
The oval foramen magnum of the Amud specimen also departs from the rounded shape of this feature in living humans and most other primates, Rak adds.
Neanderthal tot enters human-origins debate by Bower, Bruce / Science News
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