Variola

from WordNet (r) 3.0 (2006)

variola
    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}, {variola major}]

from The Collaborative International Dictionary of English v.0.48

Variola \Va*ri"o*la\, n. [LL., fr. L. varius various. See
   {Various}.] (Med.)
   The smallpox.
   [1913 Webster]