| Acronym | Meaning |
| WPCR | Water Pollution Control Research (US EPA) |
| QCT | Quasiclassical Trajectory (method For Mol. Collision Calcns.) |
| SF1 | Steroidogenic Factor 1 |
| SIMAAC | Simultaneous Multi-element Analysis With A Continuum Source |
| MTD | Maximum Tolerated Dose |
| PAM | Peptidylglycine Alpha-amidating Monooxygenase |
| LEAR | Low Energy Antiproton Ring |
| MCDF-OL | Multiconfiguration Dirac-Fock Optimum Level |
| SMO | Sample Management Office (US EPA) |
| PPM | Parts Per Million |