- a mechanical device sensitive to light, temperature, radiation level, or the like, that transmits a signal to a measuring or control instrument.
- a sense organ.
- anything, such as a photoelectric cell, that receives a signal or stimulus and responds to it
n.1947, from an adjective (1865), a shortened form of sensory (q.v.). n.
- A device, such as a photoelectric cell, that receives and responds to a signal or stimulus.
- sense organ