'tweenbrain

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    Synonym of diencephalon.

    "Deep within the brain is a biologically ancient section called the diencephalon or tweenbrain."

Synonyms

All synonyms
diencephalon

Example

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"Deep within the brain is a biologically ancient section called the diencephalon or tweenbrain."

Etymology

From 'tween + brain.

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