smallpox virus smallpox-proof • small-preferred · · · Info · Definitions · Synonyms · Characters · · smallpox virus · · Text Common · · Latin · · Scripts 14 · · Length 4 · · Syllables Definitions · · · (noun) the virus that causes smallpox in humans; can be used as a bioweapon. Synonyms: variola virus, smallpox virus. · · Noun Definition 1 Synonyms · · · variola virus · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 i latin small letter i U+0069 l latin small letter l U+006C m latin small letter m U+006D o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 s latin small letter s U+0073 u latin small letter u U+0075 v latin small letter v U+0076 x latin small letter x U+0078