Paleoencephalon

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    The most ancient part of the brain. no-plural
  2. 2
    the more primitive parts of the brain phylogenetically; most structures other than the cerebral cortex wordnet

Synonyms

All synonyms
palaeencephalonpaleencephalonpaleencephalon

Etymology

From paleo- + encephalon.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.