Definition of mesognathism in English:

mesognathism

Pronunciation /mɛˈsɒɡnəθɪz(ə)m/ /mɪˈsɒɡnəθɪz(ə)m/

noun

rare Anthropology
  • The fact or condition of being mesognathous.

Origin

Late 19th century; earliest use found in The New Sydenham Society's Lexicon of Medicine and the Allied Sciences. From meso- + -gnathism, after mesognathous.