paleencephalon

noun
pa·​le·​en·​ceph·​a·​lon | \ ˌpā-lē-in-ˈsef-ə-ˌlän How to pronounce paleencephalon (audio) \
variants: or British palae-encephalon \ ˌpal-​ē-​ How to pronounce palae-encephalon (audio) \
plural paleencephala\ -​lə How to pronounce paleencephala (audio) \

Medical Definition of paleencephalon

: the phylogenetically older part of the brain consisting of all parts except the cerebral cortex and closely related structures — compare neencephalon

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