# CDR

CEFR C1 · Noun

Source: https://englishreference.com/word/cdr
Updated: 2026-05-11

## Definition

Stands for Compact Disc Recordable. A type of disc that you can use to save music, photos, or documents from a computer one time.

For teachers: Abbreviation for Compact Disc Recordable. A digital optical disc storage format that allows data to be written once and read multiple times using a laser.

## Examples

- I saved my old photos onto a CDR.
- Before cloud storage became popular, many people used a CDR to back up their important computer files.
- The transition from magnetic tape to CDR technology allowed for faster data access and more durable long-term storage of digital archives during the late nineties.

## Usage notes

- Often written with a hyphen as CD-R; functions as a countable noun when referring to the physical disc.

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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.