Sylvian fissure

 
Pronunciation: /ˈsɪlvɪən/
(also fissure of Sylvius)

noun

Anatomy
  • a large diagonal fissure on the lateral surface of the brain which separates off the temporal lobe.

Origin:

mid 19th century: named after François de la Boë Sylvius (1614–72), Flemish anatomist