PDA may refer to:

Science and technology

* Patron-driven acquisition, a mechanism for libraries to purchase books * Personal digital assistant, a mobile device *

Photodiode array 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 packa ...

, a type of detector *

Polydiacetylenes Polydiacetylenes (PDAs) are a family of conducting polymers closely related to polyacetylene. They are created by the 1,4 topochemical polymerization of diacetylenes. They have multiple applications from the development of organic films to immobil ...

, a family of conducting polymers * Pitch detection algorithm, to find the pitch of a signal * Pushdown automaton, a type of abstract device in automata theory

Biology and medicine

Pancreatic ductal adenocarcinoma The pancreas is an organ of the digestive system and endocrine system of vertebrates. In humans, it is located in the abdomen behind the stomach and functions as a gland. The pancreas is a mixed or heterocrine gland, i.e. it has both an endoc ...

, the main type of pancreatic cancer * Patent ductus arteriosus, a heart defect * Posterior descending artery, an artery *

Potato dextrose agar Potato dextrose agar (BAM Media M127
from the U.S.

, a microbiological media for culturing yeast and fungus * Pathological demand avoidance

Music

* "PDA" (song), a song by Interpol * "PDA", a song by the Backstreet Boys from '' This Is Us'' * "PDA", a song by Audio Adrenaline from '' Audio Adrenaline'' * "

P.D.A. (We Just Don't Care) "P.D.A. (We Just Don't Care)" is a song by American singer John Legend, taken from his second studio album, ''Once Again (John Legend album), Once Again'' (2006). It was written by Legend, Jessyca Wilson, Eric Hudson, and Kawan Prather, with produ ...

", a song by John Legend

Organizations

Parenteral Drug Association The Parenteral Drug Association (PDA) is an international non-profit industry trade group for pharmaceutical and biopharmaceutical A biopharmaceutical, also known as a biological medical product, or biologic, is any pharmaceutical drug product ...

, a global pharmaceutical trade association *

Pharmacists' Defence Association The Pharmacists' Defence Association is a not-for-profit membership organisation that supports the needs of individual pharmacists, pharmacy students and pharmacy undergraduates in the United Kingdom. Membership of the PDA includes insurance, uni ...

, UK * Peruvian Debate Association, for inter-school debating *

Pinoy Dream Academy ''Pinoy Dream Academy'' (also known as PDA) is the Philippine version of Endemol's ''Operación Triunfo'' (Operation Triumph). The format is similar to Big Brother, where a set number of finalists (billed as "scholars" throughout the series) wo ...

, the Philippine franchise of Endemol's Star Academy * Population and Community Development Association, Thailand * Private defense agency, an enterprise which would provide personal protection and military defense services to individuals * Professional Driver Association, of NASCAR drivers before the

1969 Talladega 500 The inaugural race in the Talladega 500 (now Yellawood 500) series was held on September 14, 1969, at Alabama International Motor Speedway in Talladega, Alabama, USA. Background Talladega Superspeedway – originally known as Alabama Internati ...

Public development authority In the U.S. state of Washington, a public development authority (most commonly PDA; also known as a public corporation) is a government-owned corporation. They are established under RCW 35.21.730.Alternative Democratic Pole, a political party in Colombia (''Polo Democrático Alternativo'') *

Progressive Democratic Alliance The Progressive Democratic Alliance (PDA) was a centrist political party in British Columbia, Canada founded by Gordon Wilson (British Columbia politician), Gordon Wilson, Member of the Legislative Assembly (MLA) for Powell River—Sunshine Co ...

, a former political party in British Columbia, Canada * Progressive Democrats of America, a progressive political organization * Party of Democratic Action, a Bosniak party in Bosnia-Herzegovina *

Movement of Democratic Action The Movement of Democratic Action ( Bosnian: ''Pokret demokratske akcije'' or PDA) is a conservative political party in Bosnia and Herzegovina. History The party was founded by Mirsad Kukić in 2018. After Kukić was removed from the SDA Canton ...

, a political party in Bosnia-Herzegovina (''Pokret demokratske akcije'') * Aruban Democratic Party, an Aruban political party (''Partido Democrático Arubano'')

Law and culture

* Public display of affection, acts of physical intimacy in the view of others. *

Pregnancy Discrimination Act The Pregnancy Discrimination Act (PDA) of 1978 () is a United States federal statute. It amended Title VII of the Civil Rights Act of 1964 to "prohibit sex discrimination on the basis of pregnancy." The Act covers discrimination "on the basis of ...

, US * "PDA" (''The Office''), an episode from the American television sitcom ''The Office'' * '' Past Doctor Adventures'', spin-off novels from the BBC's ''Doctor Who'' *

Pub Design Awards The Pub Design Awards (PDA) are an annual awards, established in 1983 and hosted by CAMRA in association with English Heritage and the Victorian Society, that are given to exceptional pubs in the UK that have been newly built/converted or have r ...

, UK * Professional Development Award, offered by the

Scottish Qualification Authority The Scottish Qualifications Authority (SQA; Gaelic: ''Ùghdarras Theisteanas na h-Alba'') is the executive non-departmental public body of the Scottish Government responsible for accrediting educational awards. It is partly funded by the E ...

* Pathological Demand Avoidance {{Disambiguation