| Acronym | Meaning |
| HREE | Heavy Rare Earth Element(s) |
| ESD | Electron-stimulated Desorption |
| PMT | Photomultiplier Tube |
| ODP | Ocean Drilling Program |
| APC | American Plastics Council |
| CBD | Citrate-bicarbonate-dithionite (sample Treatment In Soil Analysis) |
| BMP | Bone Morphogenetic Proteins |
| EXES | Electron-induced X-ray Emission Spectrometry |
| IBV | Infectious Bronchitis Virus |
| IFSD | In-Flight Shutdown |