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
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
These motors are paired with dual active brushes capable of removing biofilm, sediment, and algae from most pools.
—Rhiannon Frater, USA Today, 5 June 2025
These bowls can harbor bacteria, mold, and biofilm, says Dr. Michael Hyder, DVM and Medical Director at Veterinary Emergency Group in Palo Alto.
—Kathy Barnes, Better Homes & Gardens, 7 Mar. 2025
See All Example Sentences for biofilm
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
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
These motors are paired with dual active brushes capable of removing biofilm, sediment, and algae from most pools.
—Rhiannon Frater, USA Today, 5 June 2025
These bowls can harbor bacteria, mold, and biofilm, says Dr. Michael Hyder, DVM and Medical Director at Veterinary Emergency Group in Palo Alto.
—Kathy Barnes, Better Homes & Gardens, 7 Mar. 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 21 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)
Love words? Need even more definitions?
Merriam-Webster unabridged
Share