| Acronym | Meaning |
| ROHS | Restrictions On Hazardous Substances |
| MPOBK | Model Potential Oppenheimer-Brinkman-Kramers |
| IEL | Intraepithelial Lymphocyte |
| SBLA | Sealed Bipolar Lead Acid (battery) |
| QBO | Quantitative Basis Orbital (an MO Or AO) |
| LICS | Laser-induced Continuum Structure |
| PFRP | Process To Further Reduce Pathogens |
| SOCI | Second-order Configuration Interaction |
| ERP | Environmental Review Process |
| MSA | Multivariate Statistical Analysis |