| Acronym | Meaning |
| GFIS | Gas Field Ion Source |
| OAR | Office Of Air And Radiation (USEPA) |
| STN | Super Twisted Nematic |
| APWR | Advanced Pressurized Water Reactor |
| ASMS | American Society For Mass Spectrometry |
| ESAA | Earth Science Advanced Aircraft |
| DQO | Data Quality Objectives |
| CO | Crystal Orbital |
| IPOD | International Phase Of Ocean Drilling |
| NPAPS | Non-phase Alternation Pulse Sequence |