| Acronym | Meaning |
| MDW | Mixed Density Wave |
| PTM | Perturbation Trajectory Method (in Gas-surface Collision Dynamics) |
| LTBRM | Lanczos Tight Binding Recursion Method |
| HHAP | Heavy Hydroaroms. From Petroleum |
| PRDDO | Partial Retention Of Diatomic Differential Overlap |
| VPEAD | Valence Photoelectron Angular Distribution |
| GSA | Geological Society Of America |
| LAP | Laboratory Accreditation Program |
| LARIS | Laser Ablation And Resonance Ionization Spectroscopy |
| MC-SEA | Multichannel Static-exchange Approximation |