| Acronym | Meaning |
| POA | Peierls-Onsager Approxn. (in Electronic Structure Calcns.) |
| NIDDM | Non-insulin-dependent Diabetes Mellitus |
| C.I. | Color Index |
| STOM | Scanning Tunneling Optical Microscopy |
| LOMO | Lowest Occupied Molecular Orbital |
| RESAM | Regional Soil Acidification Model |
| STAIRS | Storage And Information Retrieval System |
| OPA | Optical Parametric Amplifier |
| NSP | Non-starch Polysaccharide |
| SFEM | Scanning Field Emission Microscopy |