| Acronym | Meaning |
| TVD | Total Variation Diminishing |
| FGRM | Fourier-grid R-matrix Formalism (in Scattering Problems) |
| SUSTECH | Sustainable Technologies Initiative [European Communities] |
| PMS | Premenstrual Syndrome |
| SDD | Silicon Drift Detector |
| IAB | Information Access Branch |
| BSR | Bottom Simulating Reflection |
| ORU | In Orbit Replaceable Unit (spacecraft) |
| TVS | Triangular Voltage Sweep |
| ITDHO | Improved Time-dependent Harmonic Oscillator |