transponder

(tran spän′dər)

noun

a radio or radar transceiver that automatically transmits electrical signals when actuated by a specific signal from an interrogator

Origin: tran(smitter) + (re)sponder

See transponder in American Heritage Dictionary 4

noun

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

Origin:

Origin: tran(smitter)

Origin: + (re)sponder

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