| Acronym | Meaning |
| NIR | Near Infrared |
| BIXE | Bombardment-induced X-ray Emission |
| CK | Creatine Kinase |
| NCAC | Nitrogen-containing Aromatic Compound |
| BIS | Bremsstrahlung Isochromat Spectroscopy |
| TDM | Time-division Multiplexing |
| OSC | Oxygen Storage Capacity |
| DSCCR | Diffractive Sudden-closed Coupled Rotation (for Mol.-surface Scattering Calcns.) |
| CHESS | Community Health And Environmental Surveillance System |
| BSA | Breathing-sphere Approxn. (for Inelastic Mol. Collisions) |