Medical Definition of thiobacillus
1 capitalized : a genus of small rod-shaped bacteria (family Thiobacteriaceae) that live in water, sewage, and soils, derive energy from oxidation of sulfides, thiosulfates, or elemental sulfur, and obtain carbon from carbon dioxide, bicarbonates, or carbonates in solution
2plural thio·ba·cil·li \-ˌī\play : any bacterium (as some sulfur bacteria) of the genus Thiobacillus
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