Definitions of CD
  1. noun
    a digitally encoded recording on an optical disk that is smaller than a phonograph record; played back by a laser
    synonyms: compact disc, compact disk
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    audio CD, audio compact disc
    compact discs used to reproduce sound (voice and music)
    CD-R, CD-WO, compact disc recordable, compact disc write-once
    a compact disc on which you can write only once and thereafter is read-only memory
    CD-ROM, compact disc read-only memory
    a compact disk that is used with a computer (rather than with an audio system); a large amount of digital information can be stored and accessed but it cannot be altered by the user
    type of:
    optical disc, optical disk
    a disk coated with plastic that can store digital data as tiny pits etched in the surface; is read with a laser that scans the surface
    a storage device on which information (sounds or images) have been recorded
  2. noun
    a debt instrument issued by a bank; usually pays interest
    synonyms: certificate of deposit
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    time deposit
    a certificate of deposit from which withdrawals can be made only after advance notice or at a specified future date
    type of:
    certificate of indebtedness, debt instrument, obligation
    a written promise to repay a debt
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