Descrambler

Part of speech: noun

Definitions

1. A device or program that converts scrambled or encoded signals back into their original, readable form
2. Equipment or software that reverses the scrambling of transmitted data or broadcast signals to restore clarity
3. A tool that decodes encrypted or jumbled information to make it intelligible and usable again

Etymology: A descrambler is a device that undoes a scrambling process, most famously the signal scrambling used to stop unauthorised viewing of cable and satellite television. The word is simply "descramble" with the agent suffix "-er" attached, the kind of plain, transparent formation that English produces whenever a new machine needs a name. "Descramble" itself is built from the prefix "de-", meaning "undo", added to "scramble", so a descrambler is literally a thing that reverses scrambling. The pattern shows how quickly such compounds appear once a technology creates the need. Scrambling (jumbling a signal so that it is unreadable without the right key) came first, and the device that restores the original signal was named by adding the same two familiar pieces, with nothing borrowed from another language.