| Acronym | Meaning |
| IOSRR | Infinite Order Sudden Rigid-rotor Approximation |
| NIWA | National Institute For Water And Atm. Research [New Zealand] |
| MERT | Modified Effective-range Theory (for Electron-mol. Scattering) |
| COCP | Cut-off Coulomb Potential |
| TFW | Thomas-Fermi-Weizsaecker (electron-d. Theory) |
| DAFS | Diffraction Anomalous Fine Structure |
| FAP | Familial Adenomatous Polyposis |
| MDGI | Mammary Gland-derived Growth Inhibitor |
| NORS | National Organics Reconnaissance Survey (US EPA 1974-1975) |
| MNT | Molecular Nanotechnology |