| Acronym | Meaning |
| IGY | International Geophysical Year |
| AACI | Association Of American Cancer Institutes |
| GSAM | Generalized Standard Addition Method |
| IPNO | Independent-pair Natural Orbital |
| VISTTA | Visibility Impairment From Sulfur Transformation And Transport In The Atmosphere |
| BTF | Biotransfer Factor |
| INA | Ion Neutral Analysis |
| IRMDR | Infrared Microwave Double Resonance |
| CPOM | Coarse Particulate Organic Matter |
| ALI | Acute Lung Injury |