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ONAD→bacillus

bacillus

Flag: gbEnglishOxford New American Dictionary
bacillus /bəˈsiləs, bəˈsɪləs /
▸ noun
(plural bacilli /-ˈsilī/)
a rod-shaped bacterium.
▪ a disease-causing bacterium:
the bacillus was thought to have proliferated in water polluted by sewage
tubercle bacilli.
– ORIGIN late 19th century : from late Latin, diminutive of Latin baculus ‘stick’.
All bacteria belonging to the genus Bacillus are called bacilli, but not all bacteria called bacilli belong to the genus Bacillus.