Definition of macrencephaly in English:

macrencephaly

(also macroencephaly)

Pronunciation /ˌmakrɛnˈsɛfəli/ /ˌmakrɛnˈsɛf(ə)li/ /ˌmakrɛnˈkɛfəli/

noun

Medicine
  • Abnormal enlargement of the brain.

Origin

1950s; earliest use found in Funk's Standard Dictionary.