nitrogenase

noun

ni·​tro·​ge·​nase nī-ˈträ-jə-ˌnās How to pronounce nitrogenase (audio) ˈnī-trə-jə- How to pronounce nitrogenase (audio)
-ˌnāz
: an enzyme of various nitrogen-fixing bacteria that catalyzes the reduction of molecular nitrogen to ammonia

Examples of nitrogenase in a Sentence

Recent Examples on the Web The proteins involved in nitrogenase aren’t so easy to make. Matthew Hutson, The New Yorker, 6 Feb. 2024 This nitrogenase uses only iron, without molybdenum or vanadium. Matthew Hutson, The New Yorker, 6 Feb. 2024 In an alternative approach, soil bacteria that naturally colonize the roots of cereals but cannot fix nitrogen are taught to produce nitrogenase, the key enzyme that converts nitrogen from the air into plant-compatible ammonia. Scientific American, 1 Dec. 2021 Leghemoglobin, which has a high affinity for oxygen, is able to buffer the concentration of free oxygen in the cytoplasm of the infected plant cells to ensure proper function of the oxygen-sensitive nitrogenase, the enzyme responsible for fixing atmospheric nitrogen. Ashton Yoon, Discover Magazine, 26 Sep. 2017

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'nitrogenase.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1934, in the meaning defined above

Time Traveler
The first known use of nitrogenase was in 1934

Dictionary Entries Near nitrogenase

Cite this Entry

“Nitrogenase.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/nitrogenase. Accessed 15 Jul. 2024.

Medical Definition

nitrogenase

noun
ni·​tro·​ge·​nase nī-ˈträj-ə-ˌnās How to pronounce nitrogenase (audio) ˈnī-trə-jə- How to pronounce nitrogenase (audio)
-ˌnāz
: an iron- and molybdenum-containing enzyme of various nitrogen-fixing microorganisms (as some bacteria) that catalyzes the reduction of molecular nitrogen to ammonia

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