1. cadmium, Cd, atomic number 48, metallic element, metal

usage: a soft bluish-white ductile malleable toxic bivalent metallic element; occurs in association with zinc ores

2. candle, candela, cd, standard candle, luminous intensity unit, candlepower unit

usage: 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

3. certificate of deposit, CD, debt instrument, obligation, certificate of indebtedness

usage: a debt instrument issued by a bank; usually pays interest

4. compact disk, compact disc, CD, optical disk, optical disc, recording

usage: a digitally encoded recording on an optical disk that is smaller than a phonograph record; played back by a laser


1. four hundred, 400, cd, cardinal (vs. ordinal)

usage: being one hundred more than three hundred

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See also: cd (Dictionary)