PD

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PD, P.D., or Pd may refer to:

Arts and media[edit]

Economics and business[edit]

Organizations[edit]

Companies[edit]

  • Phelps Dodge, a former American mining company, now part of Freeport-McMoRan
  • Polyphony Digital, developer of the Gran Turismo video game series
  • Porter Airlines (IATA airline designator), a regional airline headquartered at Billy Bishop Toronto City Airport, Canada

Government and law[edit]

Political parties[edit]

Places[edit]

Professions[edit]

Science and technology[edit]

Medicine[edit]

Computing[edit]

  • Pentium D, a dual-core variant of the Pentium 4 processor
  • Perfect Dark (P2P), a Japanese peer-to-peer file-sharing (P2P) application designed for use with Microsoft Windows
  • Phase-change Dual, an optical media format
  • Pure Data, the graphical audio-processing language

Physics[edit]

Other uses in science and technology[edit]

Other uses[edit]

  • Full stop (or period, in American English), used in coded military communications
  • Personal development, as used in the self-help and personal growth requiring fields
  • Peu difficile, a French climbing/mountaineering grade

See also[edit]