noun
an encephalitis that was epidemic between 1915 and 1926; symptoms include paralysis of the extrinsic eye muscle and extreme muscular weakness
• Syn: ↑sleeping sickness, ↑epidemic encephalitis, ↑lethargic encephalitis, ↑encephalitis lethargica
• Hypernyms: ↑encephalitis, ↑cephalitis, ↑phrenitis
Useful english dictionary. 2012.