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Compact Disc

Definitions:

  A Compact Disc(CD)is a class of media from which data are readby optical means.
Sources:
NIST SP 800-88 Rev. 1 under CD

  A class of media from which data are read by optical means.
Sources:
NISTIR 7621 Rev. 1 from NIST SP 800-88 Rev. 1