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to represent people who cannot afford to hire one Public domain, works whose exclusive intellectual property rights are no longer valid Punitive damages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 , 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 USB PD (USB Power Delivery), an extension of the USB standard pandas (software), package for data manipulation and analysis in the Python programming language 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
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)