cd

Definitions

General English

Computing

  • noun
    (written as CD)
    a system instruction in MS-DOS and UNIX that moves you around a directory structure
  • acronymCHDIR
    (written as CD)
  • acronym forchange directory
    (written as CD)
  • acronym forCHDIR
    (written as CD)
  • noun a signal generated by a modem to inform the local computer that it has detected a carrier from a remote modem.

Electronics

  • (written as CD)
    Abbreviation of compact disc. A digital optical storage medium, usually 12 centimeters in diameter, whose contained information is encoded in microscopic pits on its metallic surface, which is protected by a plastic layer. Since there is no contact between the pickup and the recorded surface, wear is minimized, and the protective layer helps avoid reading errors due to dust or minor marks on the surface of the disc. To recover the recorded content, a laser is focused on the metallic surface of the disc, and the reflected light is modulated by the code on said disc. Compact discs can be used to store any type of digitally encoded information, and are used especially for music, computer multimedia content, or movies. A music CD, for instance, can usually hold up to 74 minutes of recorded sound, a CD-ROM can store up to around 680 megabytes, and the capacity of a DVD is up to 17 GB.
  • chemical symbol forcadmium
    (written as Cd)
  • acronym forcarrier detect
    (written as CD)
  • A silvery-white ductile and malleable metal with a bluish tinge, whose atomic number is 48. It has over 30 known isotopes, of which several are stable. It has many applications in electronics, including its use in electroplating, fire-protection systems, phosphors, rectifiers, and in batteries, such as those consisting of nickel cadmium cells. Its chemical symbol is Cd.
  • A signal a modem sends to the equipment it is connected to, such as a computer, indicating that it has sensed a carrier signal. This signifies that it is ready to receive data. Its abbreviation is CD.

Information & Library Science

  • abbreviation in Internet addresses, the top-level domain for Democratic Republic of the Congo
  • noun a government publication containing the proceedings and proposals of government committees

Media Studies

  • noun
    (written as CD)
    a small disk on which data can be stored and read by a computer or other device

Business

  • acronym forcredit derivative
    (written as CD)
  • acronym fornegotiable certificate of deposit
    (written as CD)

Politics

  • acronym forCorps Diplomatique
    (written as CD)
  • abbreviation forcommand (paper)
    (written as Cd)

Agriculture

  • noun a metallic element naturally present in soil and rock in association with zinc

Banking

  • noun a receipt issued by a bank for a large sum deposited with the bank, which acts as an interest-bearing deposit

Food

  • noun a toxic compound which may contaminate soil and which leads to severe poisoning and organ failure
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