| Acronym | Meaning |
| ACRS | Advisory Committee On Reactor Safeguards |
| TIGR | The Institute For Genomic Research |
| MIAME | Minimum Information About A Microarray Experiment |
| HESI | Health And Environmental Sciences Institute |
| OEA | Occupational Exposure Assessment |
| RFA | Regulatory Flexibility Act |
| PSXD | Position Sensitive X-ray Detector |
| PMP4 | (spin) Projected Moeller-Plesset Fourth-order (perturbation Theory) |
| MFO | Mixed-function Oxidase |
| ALS | Advanced Light Source |