PDA
PDA is an abbreviation for:
IT, technology:
- Personal Digital Assistant , a small portable computer
 - Phase Doppler Anemometry (general) or Particle Dynamics Analysis (at Dantec Dynamics A / S), method for non-intrusive measurement of flows with the help of lasers
 - Photo Diode Array , component used in optical measuring devices for recording brightness gradients, see line of photodiodes
 - Pickering, Darby & Allday , former British automobile manufacturer
 - Porting data exchange , see number portability
 - Process data analysis
 - pushdown automaton , see push-down automaton (theoretical computer science)
 
Medicine and natural sciences:
- Epidural anesthesia , a form of regional anesthesia (close to the spinal cord)
 - persistent ductus arteriosus
 - Posterior Descendent Artery, Ramus interventricularis posterior , a coronary vessel
 - Pyridoxine-dependent epilepsy , a rare form of epilepsy that is treated with vitamin B 6 (= pyridoxine)
 - Potato dextrose agar (PDA from English Potato dextrose agar), a widely used nutrient medium for the cultivation of mushrooms
 
Politics:
- the Portuguese small party Partido Democrático do Atlântico
 - the Colombian party Polo Democrático Alternativo
 
Others:
- Patron-Driven-Acquisition (customer -driven acquisition), a media acquisition model in the library sector in which the customer makes the purchase decision
 - Parenteral Drug Association , organization involved in the regulation and development of pharmaceuticals and similar products
 - Performance (oriented) display advertising , a term used in online marketing
 - Project on Defense Alternatives , a Commonwealth Institute project
 - Probabilistic Data Association
 
PdA is the abbreviation for:
- Swiss Labor Party
 - Party of Labor, see Labor Party