| Acronym | Meaning |
| PLI | Process Loading Intensity (of Biological Reactors) |
| LC | Lethal Concentration |
| DAIRS | Differential Absorption Infrared Sensor |
| DIPPR | Design Institute For Physical Property Data |
| PIN | Pesticide Information Network |
| TTVD | Trap-to-trap Vacuum Distillation |
| BICFET | Bipolar Inversion Channel Field-effect Transistor |
| DRP | Dense Random Packing |
| IPCS | International Program On Chemical Safety |
| PAMBE | Plasma-assisted Molecular Beam Epitaxy |