azotobacter
noun
azo·to·bac·ter ā-ˈzō-tə-ˌbak-tər 
: any of a genus (Azotobacter) of large rod-shaped or spherical bacteria occurring in soil and sewage and fixing atmospheric nitrogen
Example Sentences
Recent Examples on the Web One highly beneficial strain of bacteria, azotobacter, can aid in nitrogen fixation — pulling nitrogen from the air and converting it to ammonia and other beneficial compounds for the soil. 
Howard Garrett, Dallas News, 10 May 2021
Howard Garrett, Dallas News, 10 May 2021 Word History
Etymology
New Latin, genus name, from International Scientific Vocabulary azote + New Latin bacterium
First Known Use
1900, in the meaning defined above
Medical Definition
azotobacter
noun
azo·to·bac·ter ā-ˈzōt-ə-ˌbak-tər
1
capitalized : a genus of large rod-shaped or spherical bacteria occurring in soil and sewage and fixing atmospheric nitrogen
2
: any bacterium of the genus Azotobacter