# decoder

/dɪˈkoʊdɝ/ (US) · /dɪkˈəʊdɐ/ (UK) · CEFR B2 · Noun

Source: https://englishreference.com/word/decoder
Updated: 2026-05-20

## Definition

a person or a machine that changes a secret code or a signal into something you can understand. You use this when you need to translate hidden information into plain language.

For teachers: a person or device that converts encoded data or signals into a comprehensible form. Often refers to the process of translating complex information into simpler terms for a general audience.

## Examples

- The decoder translates the signal into sound.
- The journalist acted as a decoder for the technical report, explaining the complex findings to the public in simple terms.
- In the realm of digital communication, a sophisticated decoder is essential for processing the encrypted data streams that modern satellites transmit across the globe.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.