biosensor
noun
bio·sen·sor
ˌbī-(ˌ)ō-ˈsen-ˌsȯr 
-ˈsen(t)-sər
: a device that monitors and transmits information about a life process
especially
: a device consisting of a biological component (such as an enzyme or bacterium) that reacts with a target substance and an electrochemical or optical component that detects the resulting products or by-products and emits a signal
Examples of biosensor in a Sentence
Recent Examples on the Web
Researchers at Drexel University have developed a new way to reshape MXenes, a highly conductive class of nanomaterials, into one-dimensional structures that could improve batteries, biosensors, and wearable electronics.
—
Aamir Khollam, Interesting Engineering, 30 Jan. 2026
Differences in study design, combined with complex biological realities, mean that the accuracy of these biosensors can’t be boiled down to one number—and users are learning this the hard way.
—Gwendolyn Rak, IEEE Spectrum, 9 Dec. 2025
Advances in a combination of wearable biosensors to detect neuromuscular fatigue, surface testing equipment and machine learning could help predict individualized cramp risk.
—Michael Hales, The Conversation, 9 Sep. 2025
The latest over-the-counter biosensors—such as Dexcom’s Stelo and Abbott’s Lingo—can now be purchased without a prescription.
—Daryl Austin, Forbes.com, 21 Aug. 2025
See All Example Sentences for biosensor
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Aamir Khollam, Interesting Engineering, 30 Jan. 2026
Differences in study design, combined with complex biological realities, mean that the accuracy of these biosensors can’t be boiled down to one number—and users are learning this the hard way.
—Gwendolyn Rak, IEEE Spectrum, 9 Dec. 2025
Advances in a combination of wearable biosensors to detect neuromuscular fatigue, surface testing equipment and machine learning could help predict individualized cramp risk.
—Michael Hales, The Conversation, 9 Sep. 2025
The latest over-the-counter biosensors—such as Dexcom’s Stelo and Abbott’s Lingo—can now be purchased without a prescription.
—Daryl Austin, Forbes.com, 21 Aug. 2025
See All Example Sentences for biosensor
Cite this Entry
“Biosensor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/biosensor. Accessed 15 Feb. 2026.
Copy CitationMedical Definition
biosensor
noun
bio·sen·sor
ˈbī-ō-ˌsen-ˌsȯ(ə)r, -ˌsen(t)-sər
: a device that monitors and transmits information about a life process
especially
: a device consisting of a biological component (such as an enzyme or bacterium) that reacts with a target substance and an electrochemical or optical component that detects the resulting products or by-products and emits a signal
New biosensors that can sniff out traces of the explosives RDX and TNT may be used to help clean up old munitions sites. —Science News
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