| Acronym | Meaning |
| NETD | Noise Equiv. Temp. Difference |
| MIRO | Mineral Industry Research Organization (UK) |
| CCFL | Countercurrent Flow Limitation |
| CNDO SP | Complete Neglect Of Differential Overlap Spin Polarization |
| TTLC | Total Threshold Limit Concentration |
| RAPS | Regional Air Pollution Study |
| AREP | Averaged Relativistic Effective Potential |
| NOONS | Natural Orbitals Occupation Numbers |
| LAMBD | Laser Assisted Molecular Beam Deposition |
| PSSR | Perturbed Stationary State With Relativistic Effects |