MESENCEPHALON /ˌmɛzənˈsɛfəlɒn/ Scrabble 22 Words With Friends 27 Scrabble letter values: M3E1S1E1N1C3E1P3H4A1L1O1N1 = 22 Definition noun the middle portion of the brain. — synonyms: midbrain See all 931 words you can make from MESENCEPHALON → 13-letter words Words starting with M Words ending with N ← Unscramble different letters