macrencephalous

/ˌmækrɛnˈsɛfələs/
adjective
  1. Having an abnormally large brain or head (alternative form of macrencephalic).
    • The macrencephalous skull was examined by the research team.
    • The patient was described as macrencephalous in the medical report.
    • Some animals are naturally macrencephalous compared to others of similar size.