# mesencephalon

> English word · Noun · IPA /ˌmɛzənˈsɛfələn/

## Definitions
1. 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).

## Etymology
From mes- + encephalon.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/mesencephalon