| Acronym | Meaning |
| IMS | Incomplete Model Space (in Many-body Calcns.) |
| SMM | Single-molecule Magnet |
| PIPN | Pseudo Interpenetrating Polymer Network |
| EUV | Extreme Ultraviolet |
| FIRMR | Federal Information Resources Management Regulations |
| LNRS | Laser Nonresonant Shadowgraphy |
| ARP | Angle-resolved Photoemission |
| ADU | Analog-to-digital Unit |
| IDDM | Insulin-dependent Diabetes Mellitus |
| SBE | Sulfobutyl Ether |