| Acronym | Meaning |
| SIFT | Selected Ion Flow Tube |
| VLBA | Very Long Baseline Array |
| HFB | Hybrid Fluidized Bed |
| SNICS | Source Of Negative Ions By Cesium Sputtering |
| ACEL | A.c. Electroluminescent |
| CCPS | Center For Chemical Process Safety |
| RESA | Ring Infected Erythrocyte Surface Antigen |
| MINOS | Main Injector Neutrino Oscillation Search |
| TIROS | Television And IR Observation Satellite |
| OPAL | Optical Pumping Absorption Lidar |