Source : WordNet®

staphylococci
     n : spherical gram-positive parasitic bacteria that tend to form
         irregular colonies; some cause boils or septicemia or
         infections [syn: {staphylococcus}, {staph}]

staphylococcus
     n : spherical gram-positive parasitic bacteria that tend to form
         irregular colonies; some cause boils or septicemia or
         infections [syn: {staphylococci}, {staph}]
     [also: {staphylococci} (pl)]

staphylococci
     See {staphylococcus}