Primary Rate Access 
Paperwork Reduction Act 
Probabilistic Risk Assessment 
Participatory Rural Appraisal 
Planetary Radio Astronomy 
praefke 
Progressive Retinal Atrophy 
PARAMATIC 
Pendulous Reference Axis 
Plasma renin activity 
Presidential Records Act 
probabilistic risk analysis 
Paint Research Association 
panel reactive antibody 
patient record architecture 
Patient Reporting Activity 
People's Revolutionary Army 
permanent resident alien 
Planned Regulatory Action 
plutonium recycle acid 
Precision Radar Approach 
Pre-Retirement Association 
Primary Review Authority 
Project Review Authority 
IATA code for General Urquesa Airport,… 
PAL recode adapter 
panel reactive antibodies 
panel reactivity 
Paper Reduction Act 
Pars Aviation Service