WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / M / mesencephalon mesencephalon noun /mɛsɛnsɛfəlɑn/ 5 syllables 13 letters Scrabble 22 WWF 27 Definitions noun the middle portion of the brain midbrain Look “mesencephalon” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →