| Acronym | Meaning |
| PENIS | Proton-enhanced Nuclear Induction Spectroscopy |
| FRAT | Free Radical Assay Technique |
| PAHO | Pan American Health Organization |
| SCSA | Small-curvature Semiclassical Adiabatic (approxn. For Mol. Energy Levels) |
| SAB | Science Advisory Board (USEPA) |
| CML | Chronic Myelogenous Leukemia |
| GANC | Generalized Acid Neutralization Capacity Test |
| PBIRG | Pharmaceutical Business Intelligence And Research Gro |
| SSME | Space Shuttle Main Engine |
| ESAA | Earth Science Advanced Aircraft |