biofilm
noun
bio·film
ˌbī-(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
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Some have suggested that biofilms – thin, structured communities of bacteria – line the appendix.
—
Lilia Goncharova, The Conversation, 9 Mar. 2026
Every product is backed by Calprox science, supersmile's proprietary formula that gently dissolves the biofilm that plaque, bacteria and stains adhere to -- all for cleaner teeth.
—Tory Johnson, ABC News, 24 Feb. 2026
Hou said, however, finding a way to use these natural compounds in drinking water systems could help inhibit some bacterial growth or biofilm formation.
—Stephanie Brown, Verywell Health, 8 Feb. 2026
The new discovery adds to the growing assortment of bioelectrical phenomena that scientists have discovered playing out beyond the nervous system, from bacteria swapping signals within a biofilm to cells following electric fields during embryonic development.
—Elise Cutts, Quanta Magazine, 12 Jan. 2026
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Lilia Goncharova, The Conversation, 9 Mar. 2026
Every product is backed by Calprox science, supersmile's proprietary formula that gently dissolves the biofilm that plaque, bacteria and stains adhere to -- all for cleaner teeth.
—Tory Johnson, ABC News, 24 Feb. 2026
Hou said, however, finding a way to use these natural compounds in drinking water systems could help inhibit some bacterial growth or biofilm formation.
—Stephanie Brown, Verywell Health, 8 Feb. 2026
The new discovery adds to the growing assortment of bioelectrical phenomena that scientists have discovered playing out beyond the nervous system, from bacteria swapping signals within a biofilm to cells following electric fields during embryonic development.
—Elise Cutts, Quanta Magazine, 12 Jan. 2026
See All Example Sentences for biofilm
Cite this Entry
“Biofilm.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/biofilm. Accessed 12 Mar. 2026.
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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