parts per trillion Permanent Part Time punched paper tape Pulse Pair Timing Pulsed Plasma Thruster partial prothrombin time parts per thousand Physical Performance Test Plunge Protection Team Pollution Prevention Team PowerPoinT Precision Pad Technology pressure pain threshold Pro-poor Tourism pulmonary platelet trapping Pulsed Plasma Thrusters IATA code for Faa'a International Airp… Packed Pixel Technology Packet Payload Type pain pressure threshold Palmitoyl protein thioesterase Paraprofessional Tutors parietal pleural tissue part per trillion Partial Prothromboplastin Time Particle Processing Technology Pattern Processing Technology paw pressure threshold Pay Per Thousand peak-to-peak threshold
parts per trillion