Streptococcus is a term coined by Viennese surgeon Albert Theodor Billroth ( 1829-1894 ) .
Streptococcus ( term coined by Viennese surgeon Albert Theodor Billroth ( 1829-1894 ) from strepto- `` twisted '' + Modern Latin coccus `` spherical bacterium , '' from Greek kokkos meaning `` berry '' ) is a genus of coccus ( spherical ) Gram-positive bacteria belonging to the phylum Firmicutes and the order Lactobacillales ( lactic acid bacteria ) .
Streptococcus