biofilm
noun
bio·film
ˌbi-(ˌ)ō-ˈfilm 
: a thin usually resistant layer of microorganisms (such as bacteria) that form on and coat various surfaces
Examples of biofilm in a Sentence
Recent Examples on the Web
To start, thoroughly clean drain interiors using a stiff brush to scrape away biofilm and sludge.
—
Thomas Westerholm, MSNBC Newsweek, 26 June 2025
Using a biofilm of Vibrio cholerae bacteria, Yunker’s team described the shape of the emerging biofilm as a spherical cap that resembles a contact lens.
—Carrie Arnold, Quanta Magazine, 21 Apr. 2025
CagA could also be used to break up bacterial biofilms, which, like walled cities for bacteria, can prevent antibiotics from reaching infections.
—F.d. Flam, Twin Cities, 2 July 2025
Many persistent sinus infections involve biofilms – colonies of bacteria that group together to resist efforts to kill them.
—New Atlas, 30 June 2025
See All Example Sentences for biofilm
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Thomas Westerholm, MSNBC Newsweek, 26 June 2025
Using a biofilm of Vibrio cholerae bacteria, Yunker’s team described the shape of the emerging biofilm as a spherical cap that resembles a contact lens.
—Carrie Arnold, Quanta Magazine, 21 Apr. 2025
CagA could also be used to break up bacterial biofilms, which, like walled cities for bacteria, can prevent antibiotics from reaching infections.
—F.d. Flam, Twin Cities, 2 July 2025
Many persistent sinus infections involve biofilms – colonies of bacteria that group together to resist efforts to kill them.
—New Atlas, 30 June 2025
See All Example Sentences for biofilm
Cite this Entry
“Biofilm.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/biofilm. Accessed 29 Jul. 2025.
Copy CitationMedical Definition
biofilm
noun
bio·film
ˈbī-ō-ˌfilm
: a thin usually resistant layer of microorganisms (as bacteria) that form on and coat various surfaces (as of catheters or water pipes)
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