noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   Alternative form of 'tweenbrain. alt-of, alternative
2. 2
   the posterior division of the forebrain; connects the cerebral hemispheres with the mesencephalon wordnet

Synonyms

All synonyms

diencephalondiencephaloninterbrain

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