Definition of 'cd'

Noun

1. a soft bluish-white ductile malleable toxic bivalent metallic element; occurs in association with zinc ores
      Synonyms: cadmium atomic number 48
2. the basic unit of luminous intensity adopted under the Systeme International d'Unites; equal to 1/60 of the luminous intensity per square centimeter of a black body radiating at the temperature of 2,046 degrees Kelvin
      Synonyms: candle candela standard candle
3. a debt instrument issued by a bank; usually pays interest
      Synonyms: certificate of deposit
4. a digitally encoded recording on an optical disk that is smaller than a phonograph record; played back by a laser
      Synonyms: compact disk compact disc

Adjective

1. being one hundred more than three hundred
      Synonyms: four hundred 400

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