| Acronym | Meaning |
| UNIRAM | Software For Reliability |
| IRAS | Infrared Reflection Absorption Spectroscopy |
| OMB | Office Of Management And Budget |
| LMMS | Laser-microprobe Mass Spectrometry |
| SBF | Simulated Body Fluid |
| SITE | Superfund Innovative Technology Evaluation |
| IPPA | Independent Pair-potential Approximation |
| MTC | Medullary Thyroid Carcinoma |
| TC-GME | Time-convolution Generalize Master Equation (in Quantum Tunneling Calcns.) |
| FRSS | Federal Register Search System |