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
Recent Examples on the Web
Doctors say hotel coffee makers can develop bacterial biofilms because warm, moist interiors are difficult to clean thoroughly.
—
Joey Skladany,
Travel + Leisure,
30 June 2026
The air conditioner cooling systems at the Bellevue hotel in 1976 hosted such biofilms.
—
Robert Promisloff,
The Conversation,
19 June 2026
The maggots are thought to secrete various antibacterial compounds to ward off pathogenic bacteria and block biofilms from forming, overall preventing secondary infection.
—
Beth Mole,
ArsTechnica,
17 June 2026
Water bowls should also be cleaned every day, since saliva and bacteria can quickly create the slippery layer called biofilm that many owners notice around the edges.
—
Usa Today,
USA Today,
10 June 2026
See All Example Sentences for biofilm
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Joey Skladany,
Travel + Leisure,
30 June 2026
The air conditioner cooling systems at the Bellevue hotel in 1976 hosted such biofilms.
—
Robert Promisloff,
The Conversation,
19 June 2026
The maggots are thought to secrete various antibacterial compounds to ward off pathogenic bacteria and block biofilms from forming, overall preventing secondary infection.
—
Beth Mole,
ArsTechnica,
17 June 2026
Water bowls should also be cleaned every day, since saliva and bacteria can quickly create the slippery layer called biofilm that many owners notice around the edges.
—
Usa Today,
USA Today,
10 June 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 5 Jul. 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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