n 1  cap  :  a genus of nonmotile gram-positive spherical bacteria of the family Micrococcaceae that occur singly, in pairs or tetrads, or in irregular clusters and include pathogens (as S. aureus) which infect the skin and mucous membranes  2  pl  -coc*ci   :  any bacterium of the genus Staphylococcus : broadly  :  MICROCOCCUS 2 .
 
 
 
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