| Acronym | Meaning |
| SPA | Scintillation-proximity Assay |
| DPSSL | Diode Pumped Solid State Laser |
| PDVSA | Petroleos De Venezuela |
| RUSTIC | Risk Of Unsaturated/saturated Transport And Transformation Of Chemical Concentrations |
| S/MTD | STOL Maneuvering Technology Demonstrator (program) |
| PSEM | Point Source Exposure Model |
| ARXPD | Angle Resolved X-ray Photoelectron Diffraction |
| PCS | Permit Compliance System |
| RAMP | Receptor Activity Modifying Protein |
| MAMS | Multispectral Atmospheric Mapping Sensor |