WordReference Random House Unabridged Dictionary of American English © 2025
ne•en•ceph•a•lon
(nē′en sef′ə lon′, -lən),USA pronunciation n., pl. -lons, -la
ne•en•ce•phal•ic
(nē′en sə fal′ik),USA pronunciation adj.
-
(-lə).USA pronunciation
- the more recent part of the brain in the evolutionary development of animals, including the cerebral cortex and its related structures.
- 1915–20; ne- + encephalon
'neencephalon' also found in these entries (note: many are not synonyms or translations):