Political parties

• Democratic Party of Albania
  Democratic Party of Albania
  The Democratic Party of Albania is a center-right, Conservative, political party in Albania and the leading party in the governing coalition since the 2005 parliamentary elections...
  
   (Partia Demokratike)
• Democratic Party (Indonesia)
  Democratic Party (Indonesia)
  The Democratic Party is a political party in Indonesia, was founded on 9 September 2001. Its ideology is based on the Indonesian concept of Pancasila.-Origins:...
  
   (Partai Demokrat)
• Democratic Liberal Party (Romania)
  Democratic Liberal Party (Romania)
  The Democratic Liberal Party is a populist, centre-right party in Romania. It was formed on 15 December 2007, when the Democratic Party merged with the Liberal Democratic Party. From 2004 to 2007, the Democratic Party was part of the governing Justice and Truth Alliance...
  
   (Partidul Democrat)
• Democratic Party (Italy)
  Democratic Party (Italy)
  The Democratic Party is a social-democratic political party in Italy, that is the second-largest in the country. The party is led by Pier Luigi Bersani, who was elected in the 2009 leadership election....
  
   (Partito Democratico)
• People's Democracy
  People's Democracy
  People's Democracy was a political organisation that, while supporting the campaign for civil rights for Northern Ireland's Catholic minority, stated that such rights could only be achieved through the establishment of a socialist republic for all of Ireland...
  
  , a defunct political organization in Ireland
• Progressive Democrats
  Progressive Democrats
  The Progressive Democrats , commonly known as the PDs, was a pro-free market liberal political party in the Republic of Ireland.Launched on 21 December 1985 by Desmond O'Malley and other politicians who had split from Fianna Fáil and Fine Gael, the Progressive Democrats took liberal positions on...
  
  , political party in the Republic of Ireland
• Democratic Party – demokraci.pl (Partia Demokratyczna – demokraci.pl), Poland

Publications

• People's Democracy (Journal), Weekly Organ of the Communist Party of India (Marxist)
  Communist Party of India (Marxist)
  The Communist Party of India is a political party in India. It has a strong presence in the states of Kerala, West Bengal and Tripura. As of 2011, CPI is leading the state government in Tripura. It leads the Left Front coalition of leftist parties in various states and the national parliament of...
  
  

Physical sciences

• Palladium
  Palladium
  Palladium is a chemical element with the chemical symbol Pd and an atomic number of 46. It is a rare and lustrous silvery-white metal discovered in 1803 by William Hyde Wollaston. He named it after the asteroid Pallas, which was itself named after the epithet of the Greek goddess Athena, acquired...
  
   (chemical element symbol)
• Partial discharge
  Partial discharge
  In electrical engineering, partial discharge is a localised dielectric breakdown of a small portion of a solid or fluid electrical insulation system under high voltage stress, which does not bridge the space between two conductors...
  
  , an undesirable discharge phenomenon in high voltage dielectrics
• Photodiode
  Photodiode
  A photodiode is a type of photodetector capable of converting light into either current or voltage, depending upon the mode of operation.The common, traditional solar cell used to generateelectric solar power is a large area photodiode....
  
  
• Potential difference (voltage)

Medicine

• Cell surface protein PD-1
  PD-1
  Programmed Death 1, or PD-1, is a Type I membrane protein of 268 amino acids. PD-1 is a member of the extended CD28/CTLA-4 family of T cell regulators. The protein's structure includes an extracellular IgV domain followed by a transmembrane region and an intracellular tail...
  
  
• Paleolithic diet
  Paleolithic diet
  The modern dietary regimen known as the Paleolithic diet , also popularly referred to as the caveman diet, Stone Age diet and hunter-gatherer diet, is a nutritional plan based on the presumed ancient diet of wild plants and animals that various hominid species habitually consumed during the...
  
  , a diet based on presumed ancient diet
• Parkinson's disease
  Parkinson's disease
  Parkinson's disease is a degenerative disorder of the central nervous system...
  
  , a degenerative neurological condition
• Peritoneal dialysis
  Peritoneal dialysis
  Peritoneal dialysis is a treatment for patients with severe chronic kidney disease. The process uses the patient's peritoneum in the abdomen as a membrane across which fluids and dissolved substances are exchanged from the blood...
  
  
• Personality disorder
  Personality disorder
  Personality disorders, formerly referred to as character disorders, are a class of personality types and behaviors. Personality disorders are noted on Axis II of the Diagnostic and Statistical Manual of Mental Disorders or DSM-IV-TR of the American Psychiatric Association.Personality disorders are...
  
  
• Physical Diagnosis, a course in Medical School
• Polydipsia
  Polydipsia
  Polydipsia is a medical symptom in which the patient displays excessive thirst. The word derives from the Greek πολυδιψία, which is derived from πολύς + δίψα...
  
  
• Progressive disease
  Progressive disease
  Progressive disease is a physical ailment whose natural course in most cases is the worsening, growth, or spread of the disease. This may happen until death, serious debility, or organ failure occurs. Though the time distinctions are imprecise, diseases can be rapidly progressive or slowly...
  
  , oncology term
• Pupillary distance
  Pupillary distance
  Pupillary Distance or interpupillary distance is the distance between the centers of the pupils in each eye. This measurement is used when preparing to make prescription eyeglasses...
  
   in optometry

Computer programs

• Perfect Dark (P2P)
  Perfect Dark (P2P)
  is a Japanese peer-to-peer file-sharing application designed for use with Microsoft Windows . It was launched in 2006, its author is known by the pseudonym . Perfect Dark was developed with the intention for it to be the successor to both Winny and Share...
  
  , a Japanese peer-to-peer file-sharing (P2P) application designed for use with Microsoft Windows
• Pure Data
  Pure Data
  Pure Data is a visual programming language developed by Miller Puckette in the 1990s for creating interactive computer music and multimedia works. While Puckette is the main author of the program, Pd is an open source project with a large developer base working on new extensions to it. It is...
  
   the graphical audio-processing language

Video games

• Perfect Dark (series)
  Perfect Dark (series)
  Perfect Dark is a science fiction video game franchise created and developed by Rare. The series debuted with the Nintendo 64 video game Perfect Dark in 2000, which received strong acclaim from critics and players, leading to the franchise's expansion. In 2002, Rare was acquired by Microsoft Game...
  
  , a series of video games that includes the following titles:
• Perfect Dark
  Perfect Dark
  Perfect Dark is a first-person shooter video game developed by Rare for the Nintendo 64 video game console. It is considered the spiritual successor to Rare's earlier first-person shooter GoldenEye 007, with which it shares many gameplay features...
  
  , the debut video game in the series
• Perfect Dark (Game Boy Color), the second video game in the series
• Perfect Dark (Xbox Live Arcade)
  Perfect Dark (Xbox Live Arcade)
  Perfect Dark is a remake of the critically acclaimed Nintendo 64 video game of the same name. Originally developed by Rare, it was ported by 4J Studios, published by Microsoft Game Studios, and was exclusively released as an Xbox Live Arcade game for the Xbox 360 on March 17, 2010...
  
  , the remake of the original game
• Pokémon Diamond and Pearl
  Pokémon Diamond and Pearl
  are role-playing games developed by Game Freak and published by Nintendo for the Nintendo DS. With the enhanced remake Pokémon Platinum, the games comprise the fifth installment and fourth generation of the Pokémon series of RPGs...
  
  , fourth installments of Pokémon game
• Polyphony Digital
  Polyphony Digital
  Polyphony Digital, Inc. is an internal video game developing company of Sony Computer Entertainment and is part of Sony Computer Entertainment Worldwide Studios...
  
  , developer of the Gran Turismo series.
• Princess Daisy, a Nintendo character

Economics and business

• Personal development
  Personal development
  Personal development includes activities that improve awareness and identity, develop talents and potential, build human capital and facilitates employability, enhance quality of life and contribute to the realization of dreams and aspirations...
  
  , as used in the self-help and personal growth industry
• Probability of default
  Probability of default
  Probability of default is a parameter used in the calculation of economic capital or regulatory capital under Basel II for a banking institution. This is an attribute of a bank's client.-Definition:...
  
  , used in finance (Basel II)
• Professional degree, or First professional degree
• Professional development
  Professional development
  Professional development refers to skills and knowledge attained for both personal development and career advancement. Professional development encompasses all types of facilitated learning opportunities, ranging from college degrees to formal coursework, conferences and informal learning...
  
  
• Program director
  Program director
  In service industries, such as education, a program director or programme director researches, plans, develops and implements one or more of the firm's professional services...
  
  

Law, government, and society

• Police department
• Preventive detention
  Preventive detention
  Preventive detention is an imprisonment that is not imposed as the punishment for a crime, but in order to prevent a person from committing a crime, if that person is deemed likely to commit a crime....
  
  
• Property damage
  Property damage
  Property damage is damage to or the destruction of public or private property, caused either by a person who is not its owner or by natural phenomena. Property damage caused by persons is generally categorized by its cause: neglect , and intentional damage...
  
   liability, in insurance
• Public defender
  Public defender
  The term public defender is primarily used to refer to a criminal defense lawyer appointed to represent people charged with a crime but who cannot afford to hire an attorney in the United States and Brazil. The term is also applied to some ombudsman offices, for example in Jamaica, and is one way...
  
  
• Public domain
  Public domain
  Works are in the public domain if the intellectual property rights have expired, if the intellectual property rights are forfeited, or if they are not covered by intellectual property rights at all...
  
  

Other

• Axiom of projective determinacy
  Axiom of projective determinacy
  In mathematical logic, projective determinacy is the special case of the axiom of determinacy applying only to projective sets.The axiom of projective determinacy, abbreviated PD, states that for any two-player game of perfect information of length ω in which the players play natural numbers, if...
  
  
• Period
  Full stop
  A full stop is the punctuation mark commonly placed at the end of sentences. In American English, the term used for this punctuation is period. In the 21st century, it is often also called a dot by young people...
  
  , American English for "full stop", as used in coded military communication (e.g., WWII)
• Peu difficile
  Peu difficile
  Peu difficile is a French grade for climbing routes. It may be qualified, as PD- or PD+, for slightly easier or harder routes....
  
  , a French climbing/mountaineering grade
• Phase-change Dual
  Phase-change Dual
  Phase-Change Dual is a rewritable optical disc format introduced by Panasonic in 1995. Much like CD-RW, PD uses a phase change layer that can be overwritten in a single pass of the read/write head. A PD disc has a capacity of 650 MB, can be rewritten 500,000 times and is enclosed in a protective...
  
  , an optical media format
• Phelps Dodge
  Phelps Dodge
  Phelps Dodge Corporation was an American mining company founded in 1834 by Anson Greene Phelps and William Earle Dodge, Sr.. On March 19, 2007, it was acquired by Freeport-McMoRan and now operates under the name Freeport-McMoRan Copper & Gold Inc.-History:...
  
   a former American mining company, now part of Freeport-McMoRan.
• Phenyldichloroarsine
  Phenyldichloroarsine
  Phenyldichloroarsine, NATO abbreviation PD, is an organic arsenical vesicant and vomiting agent developed by Germany for use as a chemical warfare agent during World War I...
  
  , a blister agent
• The Plain Dealer, Cleveland, Ohio, USA newspaper
• Point-defence
  Point-defence
  Point-defence is the defence of a single object or a limited area, e.g. a ship, building or an airfield, now usually against air attacks and guided missiles...
  
   as a prefix for weapons
• Porter Airlines
  Porter Airlines
  Porter Airlines is a regional airline headquartered at Billy Bishop Toronto City Airport on the Toronto Islands in Toronto, Ontario, Canada. Porter operates regularly scheduled flights between Toronto and locations in Canada and the United States using Canadian-built Bombardier Dash-8 Q 400...
  
   (IATA airline designator)
• Post Diaspora, in the Honorverse series of science fiction novels
• Principia Discordia
  Principia Discordia
  Principia Discordia is a Discordian religious text written by Greg Hill and Kerry Thornley . It was originally published under the title "Principia Discordia or How The West Was Lost" in a limited edition of 5 copies in 1965...
  
  , a holy text in Discordianism
• Privatdozent
  Privatdozent
  Privatdozent or Private lecturer is a title conferred in some European university systems, especially in German-speaking countries, for someone who pursues an academic career and holds all formal qualifications to become a tenured university professor...
  
  , title/position especially in the German university
• Production diary
  Production diary
  A production diary is a live account of the making of a film for promotional purposes in the form of a video podcast. Production diaries follow different aspects of movie production while they are happening...
  
  , in film-making
• Pumpe Düse, a Volkswagen Group name for Unit Injector diesel engine technology
• Pushing Daisies
  Pushing Daisies
  Pushing Daisies is an American comedy-drama television series created by Bryan Fuller that aired on ABC from October 3, 2007 to June 13, 2009. The series stars Lee Pace as Ned, a pie-maker with the ability to bring dead things back to life with his touch, an ability that comes with stipulations...
  
  , an American Broadcasting Company television show
• A Postdoctoral Research position; a "post-doc".