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


Arts and media

* ''People's Democracy'' (newspaper), weekly organ of the Communist Party of India (Marxist) * ''
The Plain Dealer ''The Plain Dealer'' is the major newspaper of Cleveland, Ohio, United States. In fall 2019, it ranked 23rd in U.S. newspaper circulation, a significant drop since March 2013, when its circulation ranked 17th daily and 15th on Sunday. As of Ma ...
'', a Cleveland, Ohio, US newspaper * Post Diaspora, a time frame in the '' Honorverse'' series of science fiction novels * '' Principia Discordia'', a 1965 holy text in Discordianism *
Production designer In film and television, the production designer is the individual responsible for the overall aesthetic of the story. The production design gives the viewers a sense of the time period, the plot location, and character actions and feelings. Wo ...
, a profession in film or television *
Production diary A production diary is a live account of the making of a film for promotional purposes in the form of a Vodcast, video podcast. Production diaries follow different aspects of movie production while they are happening. Web-based production diaries are ...
, a promotional video podcast *
Public domain The public domain (PD) consists of all the creative work A creative work is a manifestation of creative effort including fine artwork (sculpture, paintings, drawing, sketching, performance art), dance, writing (literature), filmmaking, ...
, a copyright status


Economics and business

*
Personnel department Human resources (HR) is the set of people who make up the workforce of an organization, business sector, industry, or economy. A narrower concept is human capital, the knowledge and skills which the individuals command. Similar terms include ...
, of an organization * Price discrimination, a microeconomic pricing strategy *
Probability of default Probability of default (PD) is a financial term describing the likelihood of a default over a particular time horizon. It provides an estimate of the likelihood that a borrower will be unable to meet its debt obligations. PD is used in a variet ...
, used in finance (Basel II) * Professional degree, or first professional degree *
Professional development Professional development is learning to earn or maintain professional credentials such as academic degrees to formal coursework, attending conferences, and informal learning Informal learning is characterized "by a low degree of planning and ...
, learning to earn or maintain professional credentials * Program director, in service industries * Public Debt, of a government


Organizations


Companies

* Phelps Dodge, a former American mining company, now part of Freeport-McMoRan * Polyphony Digital, developer of the Gran Turismo video game series *
Porter Airlines Porter Airlines (stylized in all lowercase as porter) is a regional airline headquartered at Billy Bishop Toronto City Airport on the Toronto Islands in Toronto, Ontario, Canada. Owned by Porter Aviation Holdings, formerly known as REGCO Holdin ...
(IATA airline designator), a regional airline headquartered at Billy Bishop Toronto City Airport, Canada


Government and law

*
Police department The police are a constituted body of persons empowered by a state, with the aim to enforce the law, to ensure the safety, health and possessions of citizens, and to prevent crime and civil disorder. Their lawful powers include arrest and ...
* Preventive detention, an imprisonment that is putatively justified for non-punitive purposes * Property damage liability, in insurance *
Public defender A public defender is a lawyer appointed to represent people who otherwise cannot reasonably afford to hire a lawyer to defend themselves in a trial. Several countries provide people with public defenders, including the UK, Hungary and Singapore, ...
, an attorney appointed to represent people who cannot afford to hire one *
Public domain The public domain (PD) consists of all the creative work A creative work is a manifestation of creative effort including fine artwork (sculpture, paintings, drawing, sketching, performance art), dance, writing (literature), filmmaking, ...
, works whose exclusive intellectual property rights are no longer valid * Punitive damages


Political parties

*
Democratic Party of Albania The Democratic Party of Albania ( sq, Partia Demokratike e Shqipërisë, PD or PDSH) is a conservatism in Albania, conservative list of political parties in Albania, political party in Albania. It has been the largest opposition party in the c ...
(''Partia Demokratike''), a centre-right political party in Albania * Democratic Party (Indonesia) (''Partai Demokrat''), a political party in Indonesia *
Democratic Party (Italy) The Democratic Party ( it, Partito Democratico , PD) is a social-democratic political party in Italy. The party's secretary is Enrico Letta, who was elected by the national assembly in March 2021, after the resignation of the former leader Nico ...
(''Partito Democratico''), a centre-left political party in Italy * Democratic Party (Malta) (''Partit Demokratiku''), a centre-left political party in Malta *
Democratic Party (Romania) The Democratic Party ( ro, Partidul Democrat, PD) was a social democratic and, later on, centre-right political party in Romania. In January 2008, it merged with the Liberal Democratic Party (PLD), a splinter group of the National Liberal Party ...
(''Partidul Democrat''), a social-democratic and, later, a centre-right political party in Romania *
Democratic Party – demokraci.pl The Democratic Party ( pl, Partia Demokratyczna – demokraci.pl), abbreviated to PD, was a minor social-liberal political party in Poland. It had no members of the Sejm, Senate, or European Parliament. Its foundation was publicly announced on ...
(''Partia Demokratyczna – demokraci.pl''), Poland *
Party of Democrats The Party of Democrats ( it, Partito dei Democratici, PD) was a social-democratic and democratic socialist political party in San Marino. Its counterpart in Italy was the Democrats of the Left. The PD had its origins in Sammarinese Communist Par ...
(''Partito dei Democratici''), a defunct political party in San Marino * People's Democracy (Ireland), a defunct political organization in Ireland * Progressive Democrats, a defunct political party in the Republic of Ireland


Places

*
Province of Padua The Province of Padua (''Provincia di Padova'') is a province in the Veneto region of Italy. Its capital is the city of Padua. Geography It has an area of 2,142 km2, and a total population of 936,492 (2016) making it the most populated pr ...
(ISO 3166-2:IT), Italy * Port Dickson (town), a coastal city in Negeri Sembilan, Malaysia


Professions

*
Doctor of Pharmacy A Doctor of Pharmacy (PharmD; New Latin: ''Pharmaciae Doctor'') is a professional doctorate in pharmacy. In some countries, it is a doctoral degree to practice the profession of pharmacy or to become a clinical pharmacist. In many countries the ...
, also abbreviated PharmD * Postdoctoral, a research position or course of study * ''
Privatdozent ''Privatdozent'' (for men) or ''Privatdozentin'' (for women), abbreviated PD, P.D. or Priv.-Doz., is an academic title conferred at some European universities, especially in German-speaking countries, to someone who holds certain formal qualific ...
'', a title or position especially in German universities *
Production designer In film and television, the production designer is the individual responsible for the overall aesthetic of the story. The production design gives the viewers a sense of the time period, the plot location, and character actions and feelings. Wo ...
, a profession in film or television


Science and technology


Medicine

* Panic disorder, a condition with excessive fear or anxiety *
Parkinson's disease Parkinson's disease (PD), or simply Parkinson's, is a long-term degenerative disorder of the central nervous system that mainly affects the motor system. The symptoms usually emerge slowly, and as the disease worsens, non-motor symptoms becom ...
, a degenerative neurological condition *
Paroxysmal dyskinesia The paroxysmal dyskinesias (PD) are a group of movement disorders characterized by attacks of hyperkinesia with intact consciousness. Paroxysmal dyskinesia is a rare disorder, however the number of individuals it affects remains unclear. There are ...
, a group of movement disorders *
Personality disorder Personality disorders (PD) are a class of mental disorders characterized by enduring maladaptive patterns of behavior, cognition, and inner experience, exhibited across many contexts and deviating from those accepted by the individual's culture ...
, any of various psychiatric problems *
Polydipsia Polydipsia is excessive thirst or excess drinking.Porth, C. M. (1990). ''Pathophysiology: Concepts of altered health states''. Philadelphia: J.B. Lippincott Company. The word derives from the Greek () "very thirsty", which is derived from (, "mu ...
, excessive thirst *
Progressive disease Progressive disease or progressive illness is a disease or physical ailment whose course in most cases is the worsening, growth, or spread of the disease. This may happen until death, serious debility, or organ failure occurs. Some progressive di ...
, in oncology * Psychotic depression, a major depressive episode that is accompanied by psychotic symptoms * Paleolithic diet, a diet based on presumed ancient diets *
Phenyldichloroarsine Phenyldichloroarsine, also known by its wartime name phenyl Dick and its NATO abbreviation PD, is an organic arsenical vesicant and vomiting agent developed by Germany and France for use as a chemical warfare agent during World War I. The agent i ...
, a blister agent *
Pupillary distance Pupillary distance (PD) or interpupillary distance (IPD) is the distance measured in millimeters between the centers of the pupils of the eyes. This measurement is different from person to person and also depends on whether they are looking at near ...
, in optometry * Pediatric dentistry, mouth health care and tooth repair for children * Peritoneal dialysis, a way to filter the blood when the kidneys are not working well *
Pharmacodynamics Pharmacodynamics (PD) is the study of the biochemical and physiologic effects of drugs (especially pharmaceutical drugs). The effects can include those manifested within animals (including humans), microorganisms, or combinations of organisms (fo ...
, the study of how a drug affects an organism * Peyronie's disease, a connective tissue disorder involving the growth of fibrous plaques in the soft tissue of the penis


Computing

*
Pentium D Pentium D is a range of desktop 64-bit x86-64 processors based on the NetBurst microarchitecture, which is the dual-core variant of the Pentium 4 manufactured by Intel. Each CPU comprised two dies, each containing a single core, residing next to ...
, a dual-core variant of the Pentium 4 processor *
Perfect Dark (P2P) is a peer-to-peer file-sharing (P2P) application from Japan 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 bot ...
, a Japanese peer-to-peer file-sharing (P2P) application designed for use with Microsoft Windows * Phase-change Dual, an optical media format *
Pure Data Pure Data (Pd) 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 d ...
, the graphical audio-processing language *
USB PD The initial versions of the USB standard specified connectors that were easy to use and that would have acceptable life spans; revisions of the standard added smaller connectors useful for compact portable devices. Higher-speed development of t ...
(USB Power Delivery), an extension of the USB standard


Physics

*
Photodiode A photodiode is a light-sensitive semiconductor diode. It produces current when it absorbs photons. The package of a photodiode allows light (or infrared or ultraviolet radiation, or X-rays) to reach the sensitive part of the device. The packag ...
, a semiconductor device that converts light into current * Potential difference, or voltage * Partial discharge, an undesirable discharge phenomenon in high voltage dielectrics


Other uses in science and technology

*
PD resistor In electronic logic circuits, a pull-up resistor (PU) or pull-down resistor (PD) is a resistor used to ensure a known state for a signal. It is typically used in combination with components such as switches and transistors, which physically int ...
, a pull-down resistor *
Pd test A lichen ( , ) is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi species in a mutualistic relationship.Palladium Palladium is a chemical element with the symbol Pd and atomic number 46. It is a rare and lustrous silvery-white metal discovered in 1803 by the English chemist William Hyde Wollaston. He named it after the asteroid Pallas, which was itself na ...
, symbol Pd, a chemical element * Point-defence, a category of weapons *
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 infinite game of perfect information ...
, in mathematical logic * Pumpe Düse, a Volkswagen Group name for Unit Injector diesel engine technology


Other uses

*
Full stop The full stop (Commonwealth English), period (North American English), or full point , is a punctuation mark. It is used for several purposes, most often to mark the end of a declarative sentence (as distinguished from a question or exclamation ...
(or period, in American English), used in coded military communications *
Personal development Personal development or self improvement consists of activities that develop a person's capabilities and potential, build human capital, facilitate employability, and enhance quality of life and the realization of dreams and aspirations. Persona ...
, as used in the self-help and personal growth requiring fields * ''peu difficile'', in mountaineering, "little difficult" climbing grade
International French adjectival system In rock climbing, mountaineering, and other climbing disciplines, climbers give a grade to a climbing route or boulder problem, intended to describe concisely the difficulty and danger of climbing it. Different types of climbing (such as sport ...
*The NYSE ticker symbol of
PagerDuty PagerDuty is an American cloud computing company specializing in a SaaS incident response platform for IT departments. It has been recognized by ''Forbes'' on its "Cloud 100" as well as the ''USA Today'' list for the top small and mid-sized compa ...


See also

* ''
PD-50 ''PD-50'' (russian: ПД-50), Soviet designation Project 7454, was a Russian large floating dry dock built at the Götaverken Arendal shipyard in Gothenburg, Sweden and commissioned in the 1980s. At the time, it was the world's largest floating ...
'', a 1979 currently non-floating floating dry dock made in Sweden *
PD Draw PD, P.D., or Pd may refer to: Arts and media * People's Democracy (newspaper), ''People's Democracy'' (newspaper), weekly organ of the Communist Party of India (Marxist) * ''The Plain Dealer'', a Cleveland, Ohio, US newspaper * Post Diaspora, a t ...
, a bridge over the Passaic River, New Jersey, US * PD-1, a cell surface receptor protein * ''pd'', the nickname of Brent Scott, the founder of the website Insex *
Pee Dee The Pee Dee is a region in the northeast corner of the U.S. state of South Carolina. It lies along the lower watershed of the Pee Dee River, which was named after the Pee Dee, a Native American tribe that historically inhabited the region. His ...
*
Pound (mass) The pound or pound-mass is a unit of mass used in British imperial and United States customary systems of measurement. Various definitions have been used; the most common today is the international avoirdupois pound, which is legally define ...
*
Pulldown (disambiguation) Pulldown may refer to: * Pulldown (casting), a type of casting defect *Pull-down resistor, a type of resistor use *Pull-down assay, a biochemical protein extraction technique *Pull-down menu. See Menu (computing) Fitness *Pulldown exercise, a comp ...
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