| Acronym | Meaning |
| IAT | Island Arc Tholeiite |
| INTERFACE II | Integrated Reliable Fault-Tolerant Control For Large Engines |
| EH | Extended Hueckel |
| RPCVD | Remote Plasma-enhanced Chemical Vapor Deposition |
| INSIPID | Inadequate Sensitivity Improvement By Proton Indirect Detection |
| HFJ | Hartree-Fock-Jucys (in Electron-correlation Corrections Calcn.) |
| NSO | Natural Spin Orbitals |
| DASD | Direct Access Storage Device |
| PAZ | Partial Annealing Zone (fission-track) |
| CVSEH | Correlated Valence Shell Effective Hamiltonian |