mesencephalon
noun
- embryonic structure
Wiktionary
Pronunciation: /ˌmɛzənˈsɛfələn/ / /ˌmɛzənˈsɛfəlɒn/
noun
Etymology: Etymology tree English mes- English encephalon English mesencephalon From mes- + encephalon.
- 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).