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Definition of "transponder" []

  • A radio or radar transmitter-receiver activated for transmission by reception of a predetermined signal. (noun)
  • A type of radio or radar transmitter-receiver that transmits signals automatically when it receives predetermined signals (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

  • The receiver and transmitter in a communications or broadcast satellite, relaying received signals back to earth (noun)

www.Collinsdictionary.com (c) HarperCollins Publishers Ltd 2016

Use "transponder" in a sentence
  • "Also, with Ku-band (geostationary orbit) satellites, each transponder is pointing at a sector."
  • "At 8: 13 Pete Zalewski sees the information on his radar screen that the transponder is no longer transmitting, that the pilot of American Airlines flight 11 is no longer responding and that the flight route has been changed."
  • "Your ship was flying at warp 1.1 in a non-designated area, your identification transponder is not functioning, and your warp field is not dampened†¦ click†¦ please stand by†¦ click†¦ click†¦ Sir, Sol is in the Sirius Sector, but this ship is not registered."