| Acronym | Meaning |
| SPICE | Simulation Program With Integral Circuit Emphasis |
| PSD | Passive Sampling Device(s) (for Air Pollution) |
| SAP | Scientific Advisory Panel (FIFRA) |
| GCMFE | Glassy Carbon Mercury Film Electrode |
| TIROS | Television And IR Observation Satellite |
| DIHEN | Direct Injection High Efficiency Nebulizer |
| IU | International Unit |
| CFRT | Continuous Fiber Reinforced Thermoplastic Composite |
| CCCLC | Complex-coordinate Coupled-Landau-channel (method In Calcns. On Autoionizing Resonances) |
| HEDS | Human Exploration And Development Of Space |