| Acronym | Meaning |
| MPDS | Moment-polarized Dirac-Slater |
| ACSTM | Alternating Current Scanning Tunneling Microscopy |
| OPACA | Organotin Paint Control Act Of 1988 (US) |
| SDI | Selective Dissemination Of Information |
| REA | Relaxed Eddy Accumulation |
| DIMET | Desorption Induced By Multiple Electronic Transitions |
| RMOS | Rotated Morse Oscillator Spline (function For Potential Surface Calcn.) |
| UCA | Unit Cell Approximation [simulation Method] |
| MCRG | Monte Carlo Renormalization Group |
| PLIRRA | Pollution Liability Insurance And Risk Reduction Act |