资料来源 : WordNet®

variola major
     n 1: a highly contagious viral disease characterized by fever and
          weakness and skin eruption with pustules that form scabs
          that slough off leaving scars [syn: {smallpox}, {variola}]
     2: a type of smallpox virus that has a fatality rate of up to
        25 percent [syn: {variola major virus}]