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7 Essential Words of Fall

paleencephalon

[pey-lee-en-sef-uh-lon; especially British pal-ee-] /ˌpeɪ li ɛnˈsɛf əˌlɒn; especially British ˌpæl i-/
noun, plural paleencephala
[pey-lee-en-sef-uh-luh; especially British pal-ee-] /ˌpeɪ li ɛnˈsɛf ə lə; especially British ˌpæl i-/ (Show IPA)
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.
Compare neencephalon.
Origin
1915-1920
1915-20; < Neo-Latin; see pale-, encephalon
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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