propionibacterium

noun
pro·pi·oni·bac·te·ri·um | \ˌprō-pē-ˌän-ə-bak-ˈtir-ē-əm \

Medical Definition of propionibacterium 

1 capitalized : a genus (the type of the family Propionibacteriaceae) of gram-positive nonmotile usually anaerobic bacteria that form propionic acid by fermenting lactic acid, carbohydrates, and polyalcohols and that include forms found especially on human skin and in dairy products

2 plural propionibacteria\-ē-ə \ : any bacterium of the genus Propionibacterium

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