English Reference
noun

CD

n.
US /ˌsiˈdi/

  1. 01 A2 Elementary Computing

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

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

    Simple

    I found an old box of CDs in the garage, but I don't have a player anymore.

    In context

    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. 02 B2 Upper Intermediate American EnglishTechnical Finance

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

    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.

    Simple

    She decided to put her savings into a six-month CD to get a better interest rate.

    In context

    The investor laddered several CDs with varying maturity dates to ensure a steady flow of liquid capital while maximising yield.

    savings certificate
  3. 03 B2 Upper Intermediate Technical Business

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

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

    Simple

    After five years as a designer, she was promoted to CD at the advertising agency.

    In context

    The CD rejected the initial campaign concepts, insisting that the visual language did not align with the brand's new luxury positioning.

  4. 04 C1 Advanced FormalTechnical Law

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

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

    Simple

    The car had CD plates, so the police knew it belonged to an embassy.

    In context

    Vehicles bearing the CD designation often enjoy certain legal privileges and immunities under international treaty.

    diplomatic body
  5. 05 C2 Proficiency Technical Science

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

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

    Simple

    The astronomer pointed out a CD galaxy at the heart of the cluster.

    In context

    The central CD galaxy has likely grown to its enormous size by consuming smaller satellite galaxies over billions of years.

    elliptical galaxy
This entry
Level A2 · Elementary
Frequency Common
Updated