| Acronym | Meaning |
| PCA | Procoagulant Activity |
| TSH | Tensor Surface Harmonic (method In Bonding Of Metal Clusters) |
| PRTD | Proportional Residence Time Distribution (of Liquid Streams In Equalization Basins In WWT) |
| PTD | Photothermal Deflection |
| CME | Community Modelling Effort |
| CCG | Constant Crystal Growth (model) |
| CDW | Charge-density Wave |
| HPIC | High-performance Ion Chromatography |
| BAM | Brewster Angle Microscopy |
| ELFSE | End-labeled Free-solution Electrophoresis |