Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

transponder

play
noun tran·spon·der \tran(t)-ˈspän-dər\

Simple Definition of transponder

  • : a device that receives a radio signal and sends out a signal in response and that is used especially to show the location of something (such as an airplane)

Source: Merriam-Webster's Learner's Dictionary

Full Definition of transponder

  1. :  a radio or radar set that upon receiving a designated signal emits a radio signal of its own and that is used especially for the detection, identification, and location of objects and in satellites for relaying communications signals

Origin of transponder

transmitter + responder


First Known Use: circa 1944

Rhymes with transponder



Seen and Heard

What made you want to look up transponder? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

the range of perception or understanding

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

alt-5746713d76276

Which of these is a synonym of nonplus?

perplex disapprove reduce soothe
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ