neencephalon
/ˌnɪɛnˈsɛfəlɒn/ /ˌnɪɛnˈsɛf(ə)lɒn/ /ˌnɪɛnˈkɛfəlɒn/(also neëncephalon, neoencephalon) Chiefly Psychology
noun
The phylogenetically newer part of the vertebrate brain, consisting chiefly of the neocortex or neopallium.
Origin
Early 20th century. From German Neencephalon from neo- + Enzephalon.