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paleencephalon

[ pey-lee-en-sef-uh-lon; especially British pal-ee- ]

noun

, plural pa·le·en·ceph·a·la [pey-lee-en-, sef, -, uh, -l, uh, pal-ee-].
  1. (no longer in technical use) the more primitive part of the brain in the evolutionary development of animals, including all parts except the cerebral cortex and its related structures.

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Word History and Origins

Origin of paleencephalon1

First recorded in 1915–20; from New Latin; pale-, encephalon

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