Nitrosococcus
noun
Ni·tro·so·coc·cus
| \ nī-ˌtrō-sō-ˈkä-kəs
\
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Definition of Nitrosococcus
: a genus of large, spherical to ellipsoidal, nitrifying bacteria (family Chromatiaceae) that live in saline environments (such as oceans and salt lakes) and obtain energy for growth by oxidizing ammonia to nitrites
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