Streptococcus vir·i·dans (vîr  -d nz )n. Any of the alpha-hemolytic streptococci. |
Streptococcus viridans
Etymology: Gk, streptos, curved, kokkos, berry
a poorly defined species of Streptococcus similar to S. pyogenes strains. It produces alpha-hemolysis in cultures and is a common cause of subacute bacterial endocarditis and other infections, such as gingivitis, in humans.
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