cisterna magna

noun
cisterna mag·​na | \ -ˈmag-nə How to pronounce cisterna magna (audio) \
plural cisternae magnae\ -​ˌnē How to pronounce cisternae magnae (audio) \

Medical Definition of cisterna magna

: a large subarachnoid space between the caudal part of the cerebellum and the medulla oblongata

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