| Acronym | Meaning |
| MTOF | Mass Time-Of-Flight |
| MQMAS | Multiple-quantum Magic-angle Spinning |
| UHC | Unburned Hydrocarbons |
| EOTC | European Organization For Testing And Certification |
| EMS | Electron Momentum Spectroscopy |
| INDO/S | Intermediate Neglect Of Differential Overlap Screened Approxn. |
| OCTS | Ocean Color And Temperature Sensor |
| ERC | Emissions Reduction Credit |
| AERL | Air And Energy Engineering Research Laboratory |
| CRDS | Chemical Reactions Documentation Service |