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PDAPersonal Digital Assistant (electronic handheld information device)
PDAPublic Display of Affection
PDAPersonal Data Assistant
PDAProgressive Democrats of America
PDAPennsylvania Dental Association
PDAPregnancy Discrimination Act
PDAPlace des Arts (Montreal cultural centre)
PDAPinoy Dream Academy (TV show)
PDAPotato Dextrose Agar
PDAProject on Defense Alternatives (Cambridge, MA)
PDAPartei Der Arbeit (Suisse Socialist Party)
PDAPennsylvania Department of Agriculture
PDAPreliminary Damage Assessment (American Red Cross; aka Windshield Survey)
PDAPortable Digital Assistant
PDAPile Driving Analyzer
PDAPhoto-Diode Array
PDAPosterior Descending Artery
PDAPhase Doppler Anemometry
PDAPush-Down Automata (theory of computation)
PDAPersistent Ductus Arteriosus (cardiology)
PDAPrivate Detective Agency (various locations)
PDAPublic Development Authority
PDAPhilippine Dental Association
PDAProject Development Agreement
PDAProbabilistic Data Association (algorithm for detecting radar target in clutter)
PDAProbabilistic Data Association
PDAPhysical Disability Agency
PDAProduction Data Acquisition
PDAPower Distribution Assembly (Canadian, Australian and New Zealand Armies)
PDAProgressive Democratic Alliance (British Columbia)
PDAProperty Damage Accident
PDAPopulation & Community Development Association
PDAPeople's Democratic Alliance (Sierra Leone)
PDAProduction Design Associates
PDAPersonal Data Access
PDAPersonal Database Application
PDAPersonal Display of Affection
PDAPitch Detection Algorithm (digital recording)
PDAProfessional Development Alliance
PDAPotash Development Association (York, UK)
PDAPersonal Deposit Account
PDAPropane Deasphalting
PDAPhotonic Design Automation
PDAPercent Defective Allowable
PDAPremature Descent Alert (FAA TAWS)
PDAProduction Data Area
PDAProject on Death in America
PDAParameter Data Area
PDAPhysical Device Address
PDAPretty Damn Arrogant
PDAPhysical Display of Affection
PDAPredetermined Attendance (UK Fire Service)
PDAPrivate Display of Affection
PDAPersonal Delivery Assistant (gaming)
PDAPost-Deflection Acceleration
PDAPost-Delivery Availability
PDAPotential Development Area
PDAPhysical Disability Appeal
PDAPreliminary Design Approval
PDAPrivate Doctors of Australia
PDAPerry Davis Associates
PDAPercentage of Defectives Allowable
PDAPacket Downlink Assignment (GPRS)
PDAPredetermined Arc
PDAPreliminary Design Audit
PDAPhase Doppler Analysis
PDAPreventive Dental Assistant
PDAProgram Decision Authority
PDAPlanning and Decision Aid
PDAPhased Disassembly Array (Homework-PC game)
PDAPhoton Detector Assembly
PDAPressurized Docking Adapter
PDAPreliminary Design Acceptance
PDAPhillips, DiPisa and Associates
PDAPreliminary Design Assessment
PDAProperty Disposal Agent
PDAPrivate Detectives Association (Massachusetts and New Jersey)
PDAProcurement Defense Agency
PDAProgrammable Device Array
PDAPerdiemazing (TDY) system
PDAPackaging and Design Association, Europe
PDAProbability Decision Analysis
PDAPrincipal Development Activity/Agency
PDAPost-Detection Amplifier
PDAProperty Disposal Account
PDAPrimary Docking Adapter (International Space Station)
PDAProcedure Departure Authorization
PDAPrioritized Defended Asset
PDAPolish Diabetes Association
PDAPrincipal Design Activity
PDAPhysical Demand Assessment
PDAPeriod-Doubling Analysis
PDAParticipant-Directed Retirement Account
PDAPublic Disturbance Agency (gaming)
PDAPortfolio Design Analysis
PDAPathological Demand Avoidance (Syndrome)
PDAPanic Disorder with Agoraphobia
PDAProfessional Development Activity (various organizations)
PDAProforma Disbursement Account (shipping)
PDAPartito d'Azione (Italian political party)
PDAProduct Development Associates (various locations)
PDAPolicy Development and Advocacy (various organizations)
PDAProstate Ductal Adenocarcinoma (rare form of prostate cancer)
PDAPancreatic Ductal Adenocarcinoma (cancer)
PDAPublic Defender Agency (Alaska)
PDAParenteral Drug Association (now the International Association for Pharmaceutical Science and Technology)
PDAPatent Ductus Arteriosus
PDAPolo Democratico Alternativo (Spanish: Alternative Democratic Pole; Colombia)
PDAPublic Disclosure Act (various locations)
PDAPlayers Development Academy (sports; various locations)
PDAPainting and Decorating Association (Warwickshire, UK)
PDAPayday Advance Loan
PDAPreference Disaggregation Approach (decision theory)
PDAPast Doctor Adventure (Doctor Who novel)