MIDBRAIN
midbrain, mesencephalon
(noun) the middle portion of the brain
Source: WordNet® 3.1
Etymology
Noun
midbrain (plural midbrains)
(neuroanatomy) A part of the brain located rostral to the pons and caudal to the thalamus and the basal ganglia, composed of the tectum (dorsal portion) and the tegmentum (ventral portion).
Synonyms
• mesencephalon
Meronyms
• tectum
• tegmentum
Holonyms
• brain stem
Source: Wiktionary
Mid"brain`, n. Etym: [Mid, a. + brain.] (Anat.)
Definition: The middle segment of the brain; the mesencephalon. See Brain.
Source: Webster’s Unabridged Dictionary 1913 Edition