Physical Therapist Assistant 
Physical Therapy Assistant 
Propulsion Test Article 
Parent Teacher Association 
Parent-Teachers Association 
Percutaneous Transluminal Angioplasty 
Preferential Trade Area 
prior to admission 
Pakistan Telecommunication Authority 
Planar Turbulence Amplifier 
Plasma Transferred Arc 
Potential Toxic Area 
purified terephthalic acid 
packed tower aeration 
Parent-Teacher Association 
pass the ammunition 
Passenger Transport Authority 
peritonsillar abscess 
Pilotless Target Aircraft 
plasma thromboplastin antecedent 
position, time, altitude 
Post Turbine Augmentation 
Post-Test Analysis 
Prevention of Terrorism Act 
Primary Target Area 
Procurement Technical Assistance 
Programmable Tracking Antenna 
Propellant Tank Assembly 
Prototype Test Article 
Psophocarpus tetragonolobus agglutinin