| Acronym | Meaning |
| PERC | Passivated Emitter And Rear Cell (solar Cells) |
| IJC | International Joint Commission |
| ASMS | American Society For Mass Spectrometry |
| SAFIR | Single Aperture Far-Infrared Observatory |
| RMBPT | Relativistic Many-body Perturbation Theory |
| LPGD | Low-pressure Gas Discharge |
| ALRSS | Advanced Land Remote Sensing System |
| ATLEED | Automated Tensor Low-energy Electron Diffraction |
| HSQC | Heteronuclear Single Quantum Coherence |
| HCDW | Hydrogenic Continuum Distorted Wave (a Wave Function In Calcns. On Atomic And Molecular Collisions) |