| Acronym | Meaning |
| ANS | Autonomic Nervous System |
| NAT | Nitric Acid Trihydrate |
| IIT | Illinois Institute Of Technology |
| SERI | Solar Energy Research Institute |
| NRDC | National Research Development Corporation |
| H | Hecto |
| PRUDENCE | Prediction Of Regional Scenerios And Uncertainties For Defining European Climate Change Risks And Effects |
| TBO | Tropospheric Biennial Oscillation |
| IMF | Interplanetary Magnetic Field |
| HEW | Health |