cd

1 of 5

abbreviation (1)

1

candela

2

candle

3

cord

Cd

2 of 5

symbol

cadmium

CD

3 of 5

noun (1)

ˌsē-ˈdē 

: certificate of deposit

CD

4 of 5

noun (2)

: a small optical disk usually containing recorded music or computer data

also : the content (such as music or a computer program) of a CD released as a unit

promoting her latest CD

CD

5 of 5

abbreviation (2)

1

carried down

2

civil defense

3

[French corps diplomatique] diplomatic corps

Examples of cd in a Sentence

Recent Examples on the Web

Noun

The Deluxe Edition comes in a clamshell case with a CD, a conductor’s baton, a stand-alone reproduction of a Martin score, and a Blu-Ray disc with documentary footage of the re-recording sessions at Abbey Road. —Rob Sheffield, Rolling Stone, 15 Jan. 2026

In 2023, TuneCore and Believe united with CD Baby and its parent company Downtown, DistroKid, UnitedMasters, Symphonic, Empire, and Vydia, along with digital service providers Spotify and Amazon Music, to create Music Fights Fraud, which was described as an industry-wide anti-fraud initiative. —Jem Aswad, Variety, 14 Jan. 2026

Depositing $10,000 into a CD or money market account could make sense in the economic climate of 2026. —Matt Richardson, CBS News, 14 Jan. 2026

Sponsored by Ramona Radio, attendance was free, but participants were asked to purchase a CD as the cost of admission. —Regina Elling, San Diego Union-Tribune, 13 Jan. 2026

Word History

Etymology

Noun (2)

compact disc

First Known Use

Noun (1)

1866, in the meaning defined above

Noun (2)

1979, in the meaning defined above

Phrases Containing cd

• CD-ROM

Kids Definition

CD

noun

ˌsē-dē

: a small plastic disk on which information (as music or computer data) is recorded digitally and read by using a laser

Medical Definition

cd

1 of 3 abbreviation

candela

Cd

2 of 3 symbol

cadmium

CD

3 of 3 abbreviation

1

cluster of differentiation

—used with a number to denote any of numerous antigenic proteins found chiefly on the surface of white blood cells (such as T cells or B cells) see cd4, cd8

2

communicable disease

3

constant drainage

4

contagious disease

5

convulsive disorder

6

curative dose

Legal Definition

CD

abbreviation

certificate of deposit