ni·​tro·​gen-fix·​er ˈnī-trə-jən-ˈfik-sər How to pronounce nitrogen-fixer (audio)
: any of various soil microorganisms that are involved in nitrogen fixation

Word History

First Known Use

1904, in the meaning defined above

Time Traveler
The first known use of nitrogen-fixer was in 1904

Dictionary Entries Near nitrogen-fixer

Cite this Entry

“Nitrogen-fixer.” Dictionary, Merriam-Webster, Accessed 20 Jun. 2024.

Kids Definition


: any of various living things (as bacteria) in the soil that are capable of nitrogen fixation
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