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PDO

PDO can refer to:

In chemistry:

  • 1,3-Propanediol, an industrial chemical
  • Palladium(II) oxide PdO

In climate and weather:

  • The Pacific decadal oscillation, a pattern of climate variation

In compact discs:

  • Philips and Dupont Optical, a former joint venture between Philips and DuPont for CD manufacturing; also associated with the Compact Disc bronzing issue

In computing:

  • Panzer Dragoon Orta, a 3D shooter created by Smilebit on the Xbox
  • PHP Data Objects, a PHP extension that can be used as a database abstraction layer
  • Portable Distributed Objects, a version of Cocoa's Distributed Objects for remote use
  • Process Data Object, a type of protocol frame in some fieldbuses, for instance, CANopen

In food and wine:

  • Protected Designation of Origin, one of three categories stipulated in the Geographical indications and traditional specialities classifications used in the European Union for protected regional foods, and since 2009 for quality wines

In industry, finance and employment:

  • Paid Day Off, an eight-hour-long Paid Time Off
  • Petroleum Development Oman, an Omani oil company, and the part of the Omani capital region where the company is located

In mathematics:

  • Pseudo-differential operator, a concept in mathematical analysis

In sports:

  • PDO, an advanced statistic in ice hockey