| Acronym | Meaning |
| LAPW | Linearized Augmented Plane Wave (for Band-structure Calcns.) |
| ISM | Interstellar Medium |
| LOIS | Land-Ocean Interaction Study |
| ACC | 1-aminocyclopropane-1-carboxylic Acid |
| MPQC | Massively Parallel Quantum Chemistry |
| SCSAG | Small-curvature Semiclassical Adiabatic Ground-state (tunneling Approxn.) |
| PWRI | Public Works Research Institute (Japan) |
| TRNOE | Transferred Nuclear Overhauser Effect |
| 3P | Pollution Prevention Pays |
| PMF | Proton Motive Force |