# CD

/ˌsiˈdi/ (US)

Source: https://englishreference.com/word/cd
Updated: 2026-08-08

## Senses

### 1. compact disc

noun · CEFR A2

Stands for Compact Disc. A small, shiny disc that stores music, films, or information.

For teachers: Abbreviation for Compact Disc. An optical medium used to store digital data, originally developed for audio but later adapted for computer storage (CD-ROM).

- I found an old box of CDs in the garage, but I don't have a player anymore.
- While physical CD sales have plummeted in the streaming era, some audiophiles still prefer them for their uncompressed sound quality compared to low-bitrate digital files.

### 2. finance

noun · CEFR B2 · American English · Technical

Stands for Certificate of Deposit. A type of bank account where you leave your money for a set time to earn more interest.

For teachers: Abbreviation for Certificate of Deposit. A financial product commonly offered by banks that provides a fixed interest rate in exchange for the customer leaving a lump sum untouched for a predetermined period.

- She decided to put her savings into a six-month CD to get a better interest rate.
- The investor laddered several CDs with varying maturity dates to ensure a steady flow of liquid capital while maximising yield.

### 3. job title

noun · CEFR B2 · Technical

Stands for Creative Director. The person in charge of the look and feel of a project, like an ad or a magazine.

For teachers: Abbreviation for Creative Director. A high-level executive role responsible for the creative vision and design direction of an agency, brand, or media production.

- After five years as a designer, she was promoted to CD at the advertising agency.
- The CD rejected the initial campaign concepts, insisting that the visual language did not align with the brand's new luxury positioning.

### 4. diplomatic corps

noun · CEFR C1 · Formal · Technical

Stands for Corps Diplomatique. You see these letters on cars belonging to foreign diplomats.

For teachers: Abbreviation for Corps Diplomatique. The collective body of foreign diplomats representing their respective nations in a particular country.

- The car had CD plates, so the police knew it belonged to an embassy.
- Vehicles bearing the CD designation often enjoy certain legal privileges and immunities under international treaty.

### 5. astronomy

noun · CEFR C2 · Technical

A very large, bright galaxy found in the middle of a group of galaxies.

For teachers: A type of giant elliptical galaxy characterized by a large halo of stars, typically found at the centre of rich galaxy clusters.

- The astronomer pointed out a CD galaxy at the heart of the cluster.
- The central CD galaxy has likely grown to its enormous size by consuming smaller satellite galaxies over billions of years.

## Examples

- I still have a large collection of music CDs in my car.
- Before the rise of digital streaming, most people bought their favorite albums on CD at a local music store.
- The introduction of the CD in the early 1980s revolutionized the music industry by providing a durable, high-fidelity alternative to analog vinyl records and cassette tapes.

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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.