streptococcus
noun [ C ] biology specialized uk/ˌstrep.təˈkɒk.əs/ us/ˌstrep.təˈkɑː.kəs/ streptococci
链球菌
a bacterium, many types of which cause disease
Tonsillitis is normally caused by infection with streptococci. 扁桃体炎一般是由链球菌感染引起的。