Definition of biosensor
: 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
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Merriam-Webster unabridged
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Time Traveler for biosensor
The first known use of biosensor was in 1961
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