microbacterium

noun

mi·​cro·​bac·​te·​ri·​um -bak-ˈtir-ē-əm 

1

capitalized : a genus of minute nonmotile gram-positive thermotolerant bacteria closely related to or included in the family Corynebacteriaceae that are common in dairy products and the mammalian intestinal tract

2

plural microbacteria -ē-ə  : any of numerous minute heat-resistant bacteria

specifically : any bacterium of the genus Microbacterium