Meaning & use
Transponder
Last updated
An electronic device that automatically receives a signal and transmits a different or amplified signal in response, used in navigation, aviation, and tracking.
See it in a sentence
Air traffic controllers identified the aircraft using its transponder signal.
The toll booth scanned the car's transponder as it passed under the gantry.
A note on using this word
The word blends "transmitter" and "responder."
Words with a similar meaning
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