| Acronym | Meaning |
| ILWAS | Integrated Lake Water Acidification Study |
| LIFR | Leukemia Inhibitory Factor Receptor |
| CIRA | COSPAR International Reference Atmosphere |
| PAR | Population At Risk |
| CET | Collisional Energy Transfer |
| PTCR | Positive Temperature Coefficient Of Resistance (of Semiconductors) |
| VOA | Volatile Organic Aromatic Compounds |
| DIPP | Deformed Inverse-power Potential |
| CME | Crucible Melt Extraction |
| LIR | Limiting Infiltration Rate |