foramen
English Thesaurus
1. a natural opening or perforation through a bone or a membranous structure (noun.body)
hyponym | : | foramen of monro, interventricular foramen, monro's foramen, |
definition | : | the small opening (on both the right and left sides) that connects the third ventricle in the diencephalon with the lateral ventricle in the cerebral hemisphere (noun.body) |
hyponym | : | foramen magnum, |
definition | : | the large opening at the base of the cranium through which the spinal cord passes (noun.body) |
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