PPD may refer to:

Computing

* Prearranged Payment and Deposit; a payment format used in US inter-bank debit and credit transactions, part of the

ACH Network In the United States, the ACH Network is the national automated clearing house (ACH) for electronic funds transfers established in the 1960s and 1970s. It processes financial transactions for consumers, businesses, and federal, state, and loca ...

specifications. * Pixels per degree, a measure of the resolution of a display screen as seen from an angle * Points per day, a mechanism for measuring work done in the

Folding@home Folding@home (FAH or F@h) is a volunteer computing project aimed to help scientists develop new therapeutics for a variety of diseases by the means of simulating protein dynamics. This includes the process of protein folding and the movements ...

distributed computing project *

PostScript Printer Description PostScript Printer Description (PPD) files are created by vendors to describe the entire set of features and capabilities available for their PostScript printers. A PPD also contains the PostScript code (commands) used to invoke features for the p ...

, a file created by a printer vendor that describes the entire set of capabilities of a particular PostScript printer model * Portable Programmer Device, Device used to program programmable ic

Police and security

* Personal protection detail, a

security detail A security detail, often known as a PSD (protective services detail, personal security detachment, personal security detail) or PPD (personal protection detail), is a protective team assigned to protect the personal security of an individual or ...

tasked with protecting one or more persons *

Philadelphia Police Department The Philadelphia Police Department (PPD or Philly PD) is the law enforcement agency, police agency responsible for law enforcement and investigations within the City of Philadelphia, Pennsylvania. The PPD is one of the oldest municipal police a ...

, a police agency in Pennsylvania, United States *

Phoenix Police Department The Phoenix Police Department is the law enforcement agency responsible for the city of Phoenix, Arizona. As of October 2021, the Phoenix Police Department comprises just under 2,800 officers, some 350 below authorized strength of 3,125 and more ...

, a police agency in Arizona, United States * Presidential Protective Division, part of the

United States Secret Service The United States Secret Service (USSS or Secret Service) is a federal law enforcement agency under the Department of Homeland Security charged with conducting criminal investigations and protecting U.S. political leaders, their families, and ...

tasked with protecting the President and others * Probation and Parole Division in

New Mexico ) , population_demonym = New Mexican ( es, Neomexicano, Neomejicano, Nuevo Mexicano) , seat = Santa Fe , LargestCity = Albuquerque , LargestMetro = Tiguex , OfficialLang = None , Languages = English, Spanish ( New Mexican), Navajo, Ker ...

, United States

Political parties

Social Democratic Party (Portugal) The Social Democratic Party ( pt, Partido Social Democrata, ; PSD) is a liberal-conservative political party in Portugal. Commonly known by its colloquial initials PSD, on ballot papers its initials appear as its official form PPD/PSD, with the ...

(''Partido Social Democrata''), originally named Popular Democratic Party or Democratic People's Party (''Partido Popular Democrático)'', a political party in Portugal * '' Partito Popolare Democratico Svizzero'', a political party in Switzerland *

Party for Democracy (Chile) The Party for Democracy ( es, Partido por la Democracia, PPD), also known as For Democracy ( es, Por la Democracia) is a centre-left political party in Chile. It states to stand in the traditions of liberal progressivism.Party for Democracy. Decl ...

(''Partido por la Democracia''), a political party in Chile *

Popular Democratic Party (Puerto Rico) The Popular Democratic Party ( es, Partido Popular Democrático, PPD) is a political party in Puerto Rico that advocates to continue as a Commonwealth of the United States with self-governance. The party was founded in 1938 by dissidents from the ...

(''Partido Popular Democrático''), a political party in Puerto Rico

Science and medicine

Paranoid personality disorder Paranoid personality disorder (PPD) is a mental illness characterized by paranoid delusions, and a pervasive, long-standing suspiciousness and generalized mistrust of others. People with this personality disorder may be hypersensitive, easily in ...

, a mental disorder characterized by paranoia and a pervasive, long-standing suspiciousness and generalized mistrust of others. *

p-Phenylenediamine ''p''-Phenylenediamine (PPD) is an organic compound with the formula C6H4(NH2)2. This derivative of aniline is a white solid, but samples can darken due to air oxidation. It is mainly used as a component of engineering polymers and composites lik ...

, an aromatic amine * Persistent Pigment Darkening, a measure of UVA protection of sunscreens *

Pharmaceutical Product Development Pharmaceutical Product Development (PPD) is a global contract research organization (CRO) providing comprehensive, integrated drug development, laboratory and lifecycle management services. In December 2021, PPD became a wholly owned subsidiar ...

, a global contract research organization (CRO) * Pheophorbidase, an enzyme * PPD test, Purified Protein Derivative test or Mantoux test, a screening test for tuberculosis *

Postpartum depression Postpartum depression (PPD), also called postnatal depression, is a type of mood disorder associated with childbirth, which can affect both sexes. Symptoms may include extreme sadness, low energy, anxiety, crying episodes, irritability, and chan ...

, a mental disorder affecting parents within the first year of their child's birth *

Pour point depressant Pour point depressants are used to allow the use of petroleum based mineral oils at lower temperatures. The lowest temperature at which a fuel or oil will pour is called a pour point. Wax crystals, which form at lower temperatures, may interfere wit ...

, a chemical added to crude oil to lower its "pour point" * ppd,

Protopanaxadiol Protopanaxadiol (PPD) is an organic compound characterizing a group of ginsenosides. It is a dammarane-type tetracyclic terpene sapogenin found in ginseng (''Panax ginseng'') and in notoginseng (''Panax pseudoginseng''). Just what protopanaxadio ...

, a molecule *

Psychogenic polydipsia Primary polydipsia and psychogenic polydipsia are forms of polydipsia characterised by excessive fluid intake in the absence of physiological stimuli to drink. Psychogenic polydipsia which is caused by psychiatric disorders, often schizophrenia, i ...

, excessive water intake with a psychiatric or pharmaceutical cause *

Postharvest physiological deterioration In agriculture, postharvest handling is the stage of crop production immediately following harvest, including cooling, cleaning, sorting and packing. The instant a crop is removed from the ground, or separated from its parent plant, it begins to ...

, natural change of crop tissues which is undesirable for human or livestock use

Other

PPD, Inc. Pharmaceutical Product Development (PPD) is a global contract research organization (CRO) providing comprehensive, integrated drug development, laboratory and lifecycle management services. In December 2021, PPD became a wholly owned subsidiary ...

, an American contract clinical trial company. * ''

Pani Poni Dash! , also known by the title of its anime adaptation, , is a Japanese manga series by Hekiru Hikawa that uses parody, frequently referencing Japanese and American pop-culture in many ways. It features several first year students and their teach ...

'', a Japanese manga series *

Partners in Population and Development Partners in Population and Development (PPD) is an intergovernmental initiative created specifically for the purpose of expanding and improving South-to-South collaboration in the fields of reproductive health, population, and development. PPD was l ...

, an international intergovernmental organization for "southern" countries worldwide *

Pengangkutan Penumpang Djakarta Perusahaan Umum Pengangkutan Penumpang Djakarta (lit. ''Jakarta#Etymology, Djakarta Passenger Transport Public Company'', simplified as Perum PPD) is an Indonesian Ministry of State Owned Enterprises (Indonesia), state-owned company that moves ...

, a bus operator in Jakarta, Indonesia *

Pontypridd railway station Pontypridd railway station serves the town of Pontypridd in Rhondda Cynon Taf, Wales. It is located at the junction of the Merthyr line and the Rhondda line and has for many years been the only station serving the town. Until the 1930s, Pontyp ...

, Wales, its National Rail station code * ppd, an American professional video game player *

PPD-40 The PPD (''Pistolet-Pulemyot Degtyaryova'', Russian: Пистоле́т-пулемёт ''Дегтярёва'', Degtyaryov's machine pistol) is a submachine gun originally designed in 1934 by Vasily Degtyaryov. The PPD had a conventional wooden sto ...

, a Russian submachine gun *

Prevention Project Dunkelfeld The Prevention Project Dunkelfeld (PPD) is an effort founded in Germany to provide clinical and support services to individuals who are sexually attracted to children ( pedophiles and hebephiles) and want help controlling their sexual urges, but a ...

, an effort to help self-identifying pedophiles to stay offence free * Published Price to Dealer, a music industry term designating unit price * Presidential Policy Directive, a kind of

national security directive National security directives are presidential directives issued for the National Security Council (NSC). Starting with Harry Truman, every president since the founding of the National Security Council in 1947 has issued national security directive ...

from the Obama presidency {{disambiguation