A device or organ that detects certain external stimuli and responds in a distinctive manner.
the terminal through which electric current passes between metallic and nonmetallic parts of an electric circuit
Sensory; as, the sensor nerves.
a collector or emitter of electric charge in a semiconducting device
any device that receives a signal or stimulus (as heat or pressure or light or motion etc.) and responds to it in a distinctive manner
a conducting object by which electricity is conveyed into or from a solution or other non-metallic conducting medium; esp., the ends of the wires or conductors, leading from source of electricity, and terminating in the medium traversed by the current.
In the broadest definition, a sensor is a device, module, machine, or subsystem whose purpose is to detect events or changes in its environment and send the information to other electronics, frequently a computer processor. A sensor is always used with other electronics.
a conductor used to make electrical contact with some part of a circuit
An electrode is an electrical conductor used to make contact with a nonmetallic part of a circuit (e.g. a semiconductor, an electrolyte, a vacuum or air).