Process Action Team 
Program Association Table 
Process Analytical Technology 
Production Acceptance Test 
Port Address Translation 
pattern 
Parametric Artificial Talker 
Patent 
Polygon Attribute Table 
Professional Association of Teachers 
Program Allocation Table 
Program Attitude Test 
Packet Analysis Tool 
Page Attribute Table 
paroxysmal atrial tachycardia 
Passive Angle-Tracking 
Patio 
Perceptual Ability Test 
Performance Acceleration Technology 
Performance Acceptance Test 
performance appraisal team 
Peripheral Allocation Table 
Permit Assistance Team 
Personal Adjustment Training 
Pesticide Applicator Training 
photoacoustic tomography 
Physics and Advanced Technologies 
plutonium air-transportable 
Point Attribute Table 
Preliminary Acceptance Test