Definition

A device that sends and receives radio signals, often used to identify and locate objects or to relay communications.

Example

The airplane's transponder helped air traffic control track its position in the sky.

Conversation

Have you heard about the new transponder technology they're using in satellites?

Yeah, I read that it helps improve communication signals significantly.

It’s fascinating how it can identify and locate objects so accurately.

Absolutely! It sounds like a game changer for navigation systems.

Synonyms & Antonyms

Root Explanation

Transponder → It is formed from "trans-" (meaning across) and "spondere" (meaning to respond or pledge). The word describes a device that responds to signals by transmitting them across a distance.

Memory Tip

Think of a device that 'responds' ('spondere') to signals 'across' ('trans-') distances — that's what a transponder does.

Visually Confused Words