| Acronym | Meaning |
| SPCC | Spill Prevention Control And Countermeasures |
| MSL | Mean Sea Level |
| CHF | Coupled Hartree-Fock |
| HCA | Hazardous Communication Act |
| ISV | In Situ Vitrification |
| LOPT | Large-order Perturbation Theory |
| LCR | Locus Control Region |
| IZA | International Zeolite Association |
| PHWR | Pressurized Heavy Water Reactor |
| PSD | Passive Sampling Device(s) (for Air Pollution) |