Medical Dictionary

pneumococcus

noun pneu·mo·coc·cus \ˌn(y)ü-mə-ˈkäk-əs\
plural pneu·mo·coc·ci \-ˈkäk-ˌ(s)ī\

Medical Definition of PNEUMOCOCCUS

:  a bacterium of the genus Streptococcus (S. pneumoniae) that causes an acute pneumonia involving one or more lobes of the lung
May 06, 2015
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