- A device that detects, records, and transmits information regarding a physiological change or process.
- A device that uses biological materials, such as enzymes, to monitor the presence of various chemicals in a substance.
- (biochemistry) Any device that detects, records or transmits physiological data, especially data concerning the presence of chemical compounds (analytes)
- (biochemistry) A device that uses biological material (e.g. microorganisms, oligonucleotides, enzymes, antibodies) to detect other biological molecules or chemicals.