| Acronym | Meaning |
| IFOT | Invariant Fock Operator Technique |
| PERTCI | Perturbational Configuration Interaction |
| SAGFET | Self-aligned Gate Field Effect Transistor |
| CCSOP | Close-coupling Second-order Potential (in Scattering) |
| LEFM | Linear Elastic Fracture Mechanics |
| OTIS | Oklahoma Telecommunications Interlibrary System |
| WKB | Wentzel-Kramers-Brillouin (phase-shift Formula For Potential Scattering) |
| ICBO | International Conference Of Building Officials |
| ASF | Atomic Sensitivity Factor |
| GBS | Grain Boundary Sliding |