| Acronym | Meaning |
| LTEC | Linear Thermal Expansion Coefficient |
| PIRANHA | Pesticide And Industrial Chemical Risk Analysis And Hazard Assessment |
| NEA | Negative Electron Affinity |
| CIPO | Canadian Intellectual Property Office |
| RIA | Relative Ion Abundance |
| SCDM | Self-consistent Diagrammatic Method (in Calcn. On Electronic Excitation Transfer) |
| IIA | Information Industry Association |
| OWOW | Office Of Wetlands |
| HRV | Human Rotavirus |
| RE | Relativistic Eikonal |