| Acronym | Meaning |
| LT2ESWTR | Long-Term 2 Enhanced Surface Water Treatment Rule [of US EPA] |
| FRP | Fiberglass Reinforced Plastic |
| I-TEQ | International Toxic Equivalent |
| UMNDO | Spin-unrestricted Modified Neglect Of Diatomic Overlap |
| GIRMS | Gas Isotope Ratio Mass Spectrometry |
| ASHRAE | American Society Of Heating |
| MMA | Manual Metal Arc Welding |
| PIC | Products Of Incomplete Combustion |
| SPEELS | Spin-polarized Electron Energy Loss Spectroscopy |
| CRAB | Clocked Recombination Antiblooming |