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transponder

 

Definitions from WordNet

Noun transponder has 1 sense
  1. transponder - electrical device designed to receive a specific signal and automatically transmit a specific reply
    --1 is a kind of
    electrical device

Definitions from the Web

Term: Transponder

Description: A transponder is a device that receives and transmits a signal in response to a received signal. It is commonly used in communication systems and transportation technologies to facilitate data transmission, identification, and tracking.

Sense 1: In electronics, a transponder refers to a radio or radar device that receives and retransmits signals automatically, often used in aviation and maritime communication systems.

Sample sentence: The air traffic controller requested the pilot to turn on the transponder for better tracking and identification by radar.

Sense 2: In automotive technology, a transponder refers to a small electronic device embedded within a car key that sends a unique code to the vehicle's ignition system, allowing the engine to start.

Sample sentence: I had to replace the transponder in my car key because it stopped communicating with the immobilizer system.

Sense 3: In satellite communication, a transponder is a device onboard a satellite that receives a signal with information, amplifies it, and then retransmits it back to Earth.

Sample sentence: The transponder on the weather satellite provides valuable data for meteorologists to analyze and predict upcoming weather patterns.

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