noun Date: 1946 any of three forms of encephalitis that attack chiefly equines and humans in various parts of North and South America and are caused by three related single-stranded RNA viruses (genus Alphavirus of the family Togaviridae )
EQUINE ENCEPHALITIS
Meaning of EQUINE ENCEPHALITIS in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012