ace·​to·​gen | \ ə-ˈsē-tə-jən How to pronounce acetogen (audio) , -ˌjen\
plural acetogens

Definition of acetogen

: 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

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First Known Use of acetogen

circa 1895, in the meaning defined above

History and Etymology for acetogen

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

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The first known use of acetogen was circa 1895

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a usually brief trip or an expedition

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