| Meaning | Category |
| East Pacific Rise | Academic & Science->Ocean Science |
| Einstein, Podonsky, Rosen | Academic & Science->Physics |
| Ejército Popular Revolucionario | International->Mexican |
| Electron Paramagnetic Resonance | Academic & Science->Electronics |
| Electronic Patient Record | Medical->Physiology |
| Empirical Primal Root | Academic & Science->Psychology |
| Engine Pressure Ratio | Governmental->NASA |
| Entertainment Properties Trust | Business->NYSE Symbols |
| Esperanca, Western Australia, Australia | Regional->Airport Codes |
| Ethylene-Propylene (co-polymer) Resin | Academic & Science->Electronics |
| Every Painter's Responsibility | Business->General |
| Evidence Processing Room | Community->Law |
| Extended Producer Responsibility | Business->General |
| Extended Product Responsibility | Business->General |
| Extra Patient Rate | Medical->Hospitals |
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