Thiobacteriales

plural noun

Thio·​bacteriales

"+

in some classifications

: an order of bacteria of various shapes usually containing either sulfur granules or bacteriopurpurin or both, usually thriving best in the presence of hydrogen sulfide, and comprising the families Achromatiaceae, Beggiatoaceae, and Rhodobacteriaceae

Word History

Etymology

New Latin, from Thiobacterium + -ales

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