Russian spring-summer encephalitis
noun
Rus·sian spring-sum·mer encephalitis
| \ ˈrəsh-ən-ˌspriŋ-ˈsəm-ər-
\
\
Medical Definition of Russian spring-summer encephalitis
: a tick-borne encephalitis of Europe and Asia caused by a strain (Far Eastern subtype) of the tick-borne encephalitis virus and transmitted by ticks of the genus Ixodes