Most structures other than the cerebral cortex

• The more primitive parts of the brain phylogenetically

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
paleencephalon \paleencephalon\ n. The more primitive parts of the brain phylogenetically; it includes most structures other than the cerebral cortex. Syn: paleoencephalon, palaeoencephalon.

WordNet Word definitions in WordNet
n. the more primitive parts of the brain phylogenetically; most structures other than the cerebral cortex [syn: paleoencephalon , palaeencephalon ]

Wiktionary Word definitions in Wiktionary
n. (alternative form of paleoencephalon English)