acetogen

noun

ace·​to·​gen ə-ˈsē-tə-jən How to pronounce acetogen (audio)
-ˌjen
plural acetogens
: any of various anaerobic bacteria that produce acetic acid in the form of acetate from the metabolism of certain sugars (such as xylose or glucose) or from carbon dioxide and hydrogen
Kangaroos produce barely any methane as their dominant gut flora are acetogens, not methanogens.Bijal Trivedi, New Scientist, 20 Dec. 2008
Interest in acetic acid synthesis by acetogens has focused on synthesis from biomass-derived sugars …J. G. Zeikus et al., Science, 8 Mar. 1985

Word History

Etymology

aceto- + -gen (probably after the earlier adjective acetogenic or the specific epithet of Bacillus acetogenes)

First Known Use

circa 1895, in the meaning defined above

Time Traveler
The first known use of acetogen was circa 1895

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Dictionary Entries Near acetogen

Cite this Entry

“Acetogen.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/acetogen. Accessed 22 Nov. 2024.

Love words? Need even more definitions?

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