| Acronym | Meaning |
| TRRFC | Time-resolved Radio Frequency Conductivity |
| CD | Coulomb Dipole (in Electron-atom Impact Ionization Calcns.) |
| HEN | High-efficiency Nebulizer |
| GDP | Gross Domestic Product |
| OIRM | Office Of Information Resources Management |
| TCA | Traveling-cluster Approximation (a Generalization Of CPA For Electronic-structure Of Alloys) |
| CDW | Coulomb Distorted Wave (for Scattering Calcns.) |
| IRC | Information Resource Center |
| NEC | National Electrical Code |
| MGSA | Melanoma Growth Stimulatory Activity |