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Definition of streptococcus noun from the Oxford Advanced American Dictionary

 

streptococcus

 noun
noun
NAmE//ˌstrɛptəˈkɑkəs//
 
(pl. streptococci
NAmE//ˌstrɛptəˈkɑkaɪ//
 
)
(medical)
 
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a type of bacteria, some types of which can cause serious infections and illnesses
See the Oxford Advanced Learner's Dictionary entry: streptococcus