'tweenbrain

English

Alternative forms

• betweenbrain, tweenbrain

Etymology

'tween +‎ brain

Noun

'tweenbrain (plural 'tweenbrains)

1. (neuroanatomy) The region of the human brain, specifically the human forebrain, that includes the thalamus, the hypothalamus, the epithalamus, the prethalamus or subthalamus, and the pretectum.
   • 1931, Medicine: Tweenbrain & Stomach:

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

   • 2007, Robb S. Rehberg, Sports Emergency Care: A Team Approach:

     The brainstem constituents include the medulla oblongata, pons varolii, midbrain, and tweenbrain.

Synonyms

• diencephalon

Meronyms

• thalamus
• hypothalamus
• epithalamus
• prethalamus
• subthalamus
• pretectum

Holonyms

• forebrain