PD

"PDs" redirects here. For other uses, see PDS.

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, 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, a profession in film or television
• Production diary, a promotional video podcast
• Public domain, a copyright status

Economics and business

• Personnel department, of an organization
• Price discrimination, a microeconomic pricing strategy
• Probability of default, used in finance (Basel II)
• Professional degree, or first professional degree
• Professional development, 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 (IATA airline designator), a regional airline headquartered at Billy Bishop Toronto City Airport, Canada

Government and law

• Police department
• Preventive detention, an imprisonment that is putatively justified for non-punitive purposes
• Property damage liability, in insurance
• Public defender, an attorney appointed to represent people who cannot afford to hire one
• Public domain, works whose exclusive intellectual property rights are no longer valid
• Punitive damages

Political parties

• Democratic Party of Albania (Partia Demokratike), a centre-right political party in Albania
• Democratic Party (Indonesia) (Partai Demokrat), a political party in Indonesia
• Democratic Party (Italy) (Partito Democratico), a centre-left political party in Italy
• Democratic Party (Malta) (Partit Demokratiku), a centre-left political party in Malta
• Democratic Party (Romania) (Partidul Democrat), a social-democratic and, later, a centre-right political party in Romania
• Democratic Party – demokraci.pl (Partia Demokratyczna – demokraci.pl), Poland
• Party of Democrats (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
• Proyecto Dignidad, a political party in Puerto Rico

Places

• Province of Padua (ISO 3166-2:IT), Italy
• Port Dickson (town), a coastal city in Negeri Sembilan, Malaysia

Professions

• Doctor of Pharmacy, also abbreviated PharmD
• Postdoctoral, a research position or course of study
• Privatdozent, a title or position especially in German universities
• Production designer, a profession in film or television

Science and technology

Medicine

• Paleolithic diet, a diet based on presumed ancient diets
• Panic disorder, a condition with excessive fear or anxiety
• Parkinson's disease, a degenerative neurological condition
• Paroxysmal dyskinesia, a group of movement disorders
• 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
• Personality disorder, any of various psychiatric problems
• Peyronie's disease, a connective tissue disorder involving the growth of fibrous plaques in the soft tissue of the penis
• Pharmacodynamics, the study of how a drug affects an organism
• Phenyldichloroarsine, a blister agent and vomiting agent
• Polydipsia, excessive thirst
• Progressive disease, a disease that continues to worsen and often has no proven total cure
• Psychotic depression, a major depressive episode that is accompanied by psychotic symptoms
• Pupillary distance, in optometry

Computing

• 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, a graphical audio-processing language
• USB PD (USB Power Delivery), an extension of the USB standard

Physics

• Photodiode, 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, a pull-down resistor
• Pd test, the outcome of using a drop of para-phenylenediamine (also abbr. "Pd") to identify lichens
• Palladium, symbol Pd, a chemical element
• Photodisinfection, an alternative name for Antimicrobial Photodynamic Therapy
• Point-defence, a category of weapons
• Axiom of projective determinacy, in mathematical logic
• Pumpe Düse, a Volkswagen Group name for Unit Injector diesel engine technology

Other uses

• The NYSE ticker symbol of PagerDuty
• Padang railway station, West Sumatra, Indonesia (station code)
• 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, in mountaineering, "little difficult" climbing grade International French adjectival system

See also

• PD-50, a 1979 currently non-floating floating dry dock made in Sweden
• PD Draw, 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
• Pound (mass)
• Pulldown (disambiguation)