| Acronym | Meaning |
| AGU | American Geophysical Union |
| HAI | Histol. Activity Index |
| PROM | Programmable Read-only Memory |
| SOR | Surface Overflow Rate |
| TC-GME | Time-convolution Generalize Master Equation (in Quantum Tunneling Calcns.) |
| NTP | National Toxicology Program |
| RPLC | Reversed-phase Liquid Chromatography |
| MGED | Microarray Gene Expression Database |
| NVFEL | National Vehicle And Fuel Emissions Laboratory |
| IPMI | International Precious Metals Institute |