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cd

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abbreviation (1)

1
candela
2
candle
3
cord

Cd

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symbol

cadmium

CD

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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

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abbreviation (2)

1
carried down
2
civil defense
3
[French corps diplomatique] diplomatic corps

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

Time Traveler
The first known use of cd was in 1866

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