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transponder
or tran·spon·dor
[ tran-spon-der ]
noun
- a radio, radar, or sonar transceiver that automatically transmits a signal upon reception of a designated incoming signal.
transponder
/ trænˈspɒndə /
noun
- a type of radio or radar transmitter-receiver that transmits signals automatically when it receives predetermined signals
- the receiver and transmitter in a communications or broadcast satellite, relaying received signals back to earth
transponder
/ trăn-spŏn′dər /
- A radio or radar transmitter and receiver that responds to an incoming signal either by broadcasting its own predetermined signal (as in aircraft identification systems) or by relaying the incoming signal at a different frequency (as in satellite communications).
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Word History and Origins
Origin of transponder1
First recorded in 1940–45; trans(mitter) + (res)ponder
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Word History and Origins
Origin of transponder1
C20: from transmitter + responder
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Example Sentences
The tripwire for an unfolding plot to take control of the flight would be the transponder, operated by a switch beside the pilots.
From The Daily Beast
However, to use the phrase “switched off” in relation to the transponder and the ACARS was in itself prejudicial.
From The Daily Beast
With so much else crumbling, the transponder lies at the heart of this great mystery.
From The Daily Beast
Government officials now admit the data system and transponder quit communicating after the pilots said things were OK.
From The Daily Beast
The transponder is really the tripwire for whatever began to unfold on that jet.
From The Daily Beast
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