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Definition of bacillus noun from the Oxford Advanced Learner's Dictionary

bacillus

noun
 
/bəˈsɪləs/
 
/bəˈsɪləs/
(plural bacilli
 
/bəˈsɪlaɪ/
 
/bəˈsɪlaɪ/
)
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  1. a type of bacteria. There are several types of bacillus, some of which cause disease.
    Oxford Collocations DictionaryBacillus is used after these nouns:
    • leprosy
    See full entry
    Word Originlate 19th cent.: from late Latin, diminutive of Latin baculus ‘stick’.
See bacillus in the Oxford Advanced American Dictionary
buttercup
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