ep ‧ i ‧ lep ‧ sy /ˈepəlepsi, ˈepɪlepsi/ BrE AmE noun [uncountable]
[ Date: 1500-1600 ; Language: French ; Origin: épilepsie , from Greek epilepsia , from epilambanein 'to seize' ]
a medical condition affecting your brain, that can make you suddenly become unconscious or unable to control your movements for a short time