grand mal
noun /ˌɡrɒ̃ ˈmæl/
/ˌɡræn ˈmɑːl/, /ˌɡræn ˈmæl/
[uncountable] (from French, medical)- a serious form of epilepsy in which somebody becomes unconscious for fairly long periods compare petit malWord Originlate 19th cent.: from French, literally ‘great sickness’.