| Acronym | Meaning |
| HREE | Heavy Rare Earth Element(s) |
| ESSP | Earth Systems Science Pathfinder |
| ARM | Atmospheric Radiation Measurement |
| PPM | Path Probability Method |
| HSC | HAZMAT Spill Center |
| BSDF | Bidirectional Scatter Distribution Function |
| PWB | Printed Wiring Board |
| EPEC | Enteropathogenic Escherichia Coli |
| IRAV | Intense Infrared Active Vibration |
| TMP | Turbomolecular Pump |