| Acronym | Meaning |
| TDFM | Two-surface Dirac-Frenkel-Mclachlan (variational Method) |
| OWVP | Outgoing Wave Variational Principle |
| RSMST | Real-space Multiple-scattering Theory (in Electronic Structure) |
| TSD | Treatment, Storage, Or Disposal |
| IVAP | Intimate Valence Alternation Pairs (bonding Model In Electronic Structure Calcns.) |
| TSM | Thickness Shear Mode |
| PIXET | Proton Induced X-ray Emission Tomography |
| SLM | Spatial Light Modulator |
| ASHG | American Society Of Human Genetics |
| HIWIP | Homojunction Interfacial Work-function Internal Photoemission |