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transponder

transponder

49 7.5
An electronic device that receives a signal and sends a reply automatically
  • noun
  • /trænˈspɒndər/
  • Specialized
translation icon : transpondedor
  • Your transponder indicates you're descending.
  • use of transponders

Much the same way you were broadcasting a signal into the radio transponder in your car.

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Examples

  • The aircraft's transponder sent a signal that helped air traffic controllers track its location.

  • The sea king is equipped with an emergency transponder, that when activated, sends out a traceable distress signal.

  • So the drug lord is the one who put the transponder in with the money.

    Blog text (20)
  • I turned off the transponder.

  • The screen at the right provides street address, transponder ID, reading status, and actual reading.

    Academic text (1997)
  • Concerns about privacy and fraud may also be holding back transponder use.

    Academic text (2003)
  • This transponder chip is completely untraceable.

  • One solution is the installation of transponders on a house or other site.

    Academic text (2009)
  • They said that he lost his transponder after he turned off-course.

  • Even if there is extensive regional coverage and strong transponder waves, they can penetrate some obstacles.

    Blog text (19)

Synonyms

transceiver
vstransponder
  • Specialized
18 5.6

A device that sends and receives signals, like a radio

automatically replies to a specific incoming signal without manual control

How Helpful

radar beacon
  • Specialized
6.5
transponder
  • Specialized
49 7.5
reflector
9 4.1
marker
86 1.0

Surface Forms

transponder singular
transponders plural

Morphology

transponder = transpond + er

The meaning 'a device that transmits a reply' is inferable, but the base 'transpond' is a technical/contracted formation (not a standalone English verb), so the morphology is not a regular, fully transparent derivation for learners.

Etymology

Transponder comes from joining trans- ('across' or 'through') and responder ('one who replies'), and it is like the familiar words transmit and respond. So a transponder is a device that automatically 'replies by sending' a signal when it receives one.