noun
: any of various viruses or prions having a long incubation period between infection and the clinical appearance of the slowly progressive serious or fatal disease (as scrapie or Creutzfeldt-Jakob disease) associated with it
noun
: any of various viruses or prions having a long incubation period between infection and the clinical appearance of the slowly progressive serious or fatal disease (as scrapie or Creutzfeldt-Jakob disease) associated with it
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012