Definition of "biofilm" [biofilm]

• A thin film of mucus created by and containing a colony of bacteria and other microorganisms. (noun)

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• "A biofilm is a community of bacteria that grows on a surface."
• "Toilets contain a bacterial line just below the water level called a biofilm."
• "Bacteria have been found to create an invisible, strongly adhering, slimy layer or film of cells, called a biofilm, on even hard and smooth surfaces such as stainless steel."