| Acronym | Meaning |
| NPTN | National Pesticide Telecommunications Network |
| AF | Audio Frequency |
| OECA | Office Of Enforcement And Compliance Assurance |
| VERI | Visual-empirical Region Of Influence |
| REMCO | ISO Council Committee On Reference Materials |
| FN | Ferrite Number |
| MF | Modifying Factor (in Oral RfD) |
| PPGVB | Perfect Pairing Generalized Valence Bond (wave Function) |
| CSCM | Chemical Shift Correlation Map |
| APT | Accelerator Production Of Tritium |