| Acronym | Meaning |
| PMLG | Phase Modulated Lee-Goldburg (NMR Spectrometry) |
| CPESA | Coincidence-enhanced Proton Elastic Scattering Analysis |
| AWRA | American Water Resources Association |
| AAODL | Atmospheric Aerosols And Optics Data Library |
| ITRS | International Technology Roadmap For Semiconductors |
| OEP | Optimized Effective-potential (quantum Method) |
| NDDO | Neglect Of Diatomic Differential Overlap |
| IBSCA | Ion Beam Spectrochemical Analysis |
| ANS | Advanced Neutron Source |
| PFBC-CC | Pressurized Fluidized-bed Combustion/combined Cycle (of Coal) |