| Acronym | Meaning |
| UCEPA | Unitary Coupled Electron Pair Approximation |
| CCIX | Continuous Countercurrent Ion Exchange |
| ERG | Emergency Response Guidebook |
| MTF | Multiple Tube Fermentation |
| TPO | Thermoplastic Polyolefin |
| TDR | Time Domain Reflectometer |
| EST | Eastern Standard Time |
| FBA | Fluorescent Brightening Agent |
| LED | Light-emitting Diode |
| DWPI | Derwent World Patents Index |