桿菌
Bacillus \Ba*cil"lus\, n.; pl. {Bacilli}. [NL., for L. bacillum. See {Bacillarle}.] (Biol.) A variety of bacterium; a microscopic, rod-shaped vegetable organism.
Bacilli n : aerobic rod-shaped spore-producing bacterium; often occurring in chainlike formations; found primarily in soil [syn: {Bacillus}, {B}]