biofilm

Scientific

/ bī′ō-fĭlm′ /

A complex structure adhering to surfaces that are regularly in contact with water, consisting of colonies of bacteria and usually other microorganisms such as yeasts, fungi, and protozoa that secrete a mucilaginous protective coating in which they are encased. Biofilms can form on solid or liquid surfaces as well as on soft tissue in living organisms, and are typically resistant to conventional methods of disinfection. Dental plaque, the slimy coating that fouls pipes and tanks, and algal mats on bodies of water are examples of biofilms. While biofilms are generally pathogenic in the body, causing such diseases as cystic fibrosis and otitis media, they can be used beneficially in treating sewage, industrial waste, and contaminated soil.

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

"The biofilm context for combating antibiotic resistance is particularly important since this is one of the most challenging forms of bacterial growth to overcome in the clinic or in enclosed environments such as aquafarm ponds and sewage treatment plants," said Bier.

From Science Daily

The biofilm formed by Lactobacillus bacteria proved to be extremely sensitive to the substance, raising concerns about potential harm to the intestinal microflora.

From Science Daily

This dye allowed them to assess acidity in different areas of the biofilm.

From Science Daily

Galactose-containing carbohydrates became less abundant near the base of the biofilm and more concentrated toward the top, suggesting a reorganization that may limit acid buildup near tooth surfaces.

From Science Daily

This shift helped raise pH levels inside the biofilm.

From Science Daily

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023