| Acronym | Meaning |
| LT2ESWTR | Long-Term 2 Enhanced Surface Water Treatment Rule [of US EPA] |
| LDRP | Leak Detection And Repair Program |
| CAFEGE | Classically Approximated Free-electron-gas Exchange |
| DHS | Department Of Homeland Securitypar |
| BRDF | Bidirectional Reflectance Distribution Function |
| POTDR | Polarization Optical Time Domain Reflectometry |
| SDOSS | Sodium Dioctylsulfosuccinate |
| BPCC | 2,2'-bipyridinium Chlorochromate |
| SPARPES | Spin Polarized Angle-resolved Photoelectron Spectroscopy |
| IPPA | Independent Pair-potential Approximation |