| Acronym | Meaning |
| HEB | High Efficiency Boiler |
| ALAD | Delta-aminolevulinic Acid Dehydratase (lead Poisoning Indicator) |
| ECEC | Effective Cation Exchange Capacity |
| SRIM | Selected Research In Microfiche |
| EDL | Electric Double Layer |
| FI | Fouling Index |
| CIRA | COSPAR International Reference Atmosphere |
| CHQ | Cold Heading Quality |
| OFISP | Oscillating Flow Injection Stripping Potentiometry |
| PAHO | Pan American Health Organization |