transponder (redirected from Transponders)

tran·spond·er  (trn-spndr)

n.

A radio or radar transmitter-receiver activated for transmission by reception of a predetermined signal.

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[tran(smitter) + (re)sponder.]

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transponder

Noun

a type of radio or radar transmitter-receiver that transmits signals automatically when it receives predetermined signals [transmitter + responder]

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transponder  (trn-spndr)

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).

Thesaurus

Noun

1.

transponder - electrical device designed to receive a specific signal and automatically transmit a specific reply electrical device - a device that produces or is powered by electricity

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A receiver-transmitter which will generate a reply signal, upon proper interrogation. See also responsor.