| Acronym | Meaning |
| CAP | Complex Absorbing Potential |
| SF-PNM | Step Function Perturbative Numerical Method |
| IPC | Integrated Pollution Control |
| OPC | Optical Particle Counter |
| PQFP | Plastic Quad Flat Package |
| WWW | World Wide Web |
| LHC | Large Hadron Collider |
| ASQ | Axle Shaft Quality |
| LDA | Local-density Approximation |
| OHCE | One-and-a-half-centered Expansion (method For Calcns. On Charge Transfer In Ion-atom Scattering) |