staphylococcus

staph·​y·​lo·​coc·​cus | \ ˌsta-f(ə-)lō-ˈkä-kəs

: any of a genus (Staphylococcus) of nonmotile gram-positive spherical bacteria that occur singly, in pairs or tetrads, or in irregular clusters and include causative agents of various diseases (such as skin infections, food poisoning, and endocarditis)