PDA

A PDA is most commonly a personal digital assistant, also known as a personal data assistant, a mobile electronic device.

PDA may also refer to:

In science, medicine and technology:

• Patent ductus arteriosus, a heart defect
• Posterior descending artery, an alternative name for the posterior interventricular artery
• Photodiode array, a type of detector
• Polydiacetylenes, a family of conducting polymers
• Potato dextrose agar, a microbiological media for culturing yeast and fungus
• Pathological demand avoidance syndrome

In mathematics:

• Pitch detection algorithm, to find the pitch of a signal
• Pushdown automaton, a type of abstract device in automata theory

In music:

• "PDA" (song), a song by Interpol
• "PDA", a song by the Backstreet Boys from This Is Us
• P.D.A. (We Just Don't Care), a song by John Legend

In politics:

• Alternative Democratic Pole, a political party in Colombia (Polo Democrático Alternativo)
• Pregnancy Discrimination Act, US
• Progressive Democratic Alliance, a past political party in British Columbia, Canada
• Progressive Democrats of America, faction
• Party of Democratic Action, a Bosniak party in Bosnia-Herzegovina
• Aruban Democratic Party, an Aruban political party (Partido Democrático Arubano)

Organizations:

• Parenteral Drug Association
• Pharmacists' Defence Association, UK
• Peruvian Debate Association, for inter-school debating
• Pinoy Dream Academy, the Philippine franchise of Endemol's Star Academy
• Population and Community Development Association, Thailand
• Professional Driver Association, of NASCAR drivers before the 1969 Talladega 500

Other uses:

• PDA (The Office), episode from US TV series
• Past Doctor Adventures, spin-off novels from the BBC's Doctor Who
• Public development authority, government-owned corporation in Washington, US
• Private defense agency
• Pub Design Awards
• Public display of affection
• Professional Development Award, offered by the Scottish Qualification Authority.