| Acronym | Meaning |
| XBIS | X-ray Bremsstrahlung Isochromat Spectroscopy |
| CRLAS | Cavity Ringdown Laser Absorption Spectroscopy |
| ICNIRS | International Council For Near Infrared Spectroscopy |
| PBM | Proton Beam Micromachining |
| VDRE | Vitamin D-responsive Element |
| DSMC | Direct Simulation Monte Carlo |
| RRC | Regional Response Center |
| OSM | Overlapping Sphere Model |
| PWSB | Plane-wave Second Born |
| ORV | Optical Retardation Velocity |