sulfur bacterium


: any of various bacteria (especially genus Thiobacillus) capable of metabolizing sulfur compounds

Word History

First Known Use

1891, in the meaning defined above

Time Traveler
The first known use of sulfur bacterium was in 1891

Dictionary Entries Near sulfur bacterium

Cite this Entry

“Sulfur bacterium.” Dictionary, Merriam-Webster, Accessed 29 Jan. 2023.

Medical Definition

sulfur bacterium

: any of various bacteria capable of reducing sulfur compounds
especially : one of the genus Thiobacillus

More from Merriam-Webster on sulfur bacterium

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Fashionable Words

  • dog-sunglasses-scarf
  • Which of these items is named for a deadly weapon?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

Solve today's spelling word game by finding as many words as you can with using just 7 letters. Longer words score more points.

Can you make 12 words with 7 letters?