| Acronym | Meaning |
| EBIR | Energy Based Integral Retention (in Electronic-structure Calcns.) |
| CFCC | Continuous Fiber Ceramic Composite |
| ACF | Autocorrelation Function |
| MSUD | Maple Syrup Urine Disease |
| PTS | Pressurized Thermal Shock |
| NIBSC | National Institute For Biological Standards And Control |
| NPAH | Nitro-polycyclic Aromatic Hydrocarbon |
| QDPT | Quasi-degenerate Perturbation Theory |
| MAC | Maximum Admissible Concentration |
| CIRAC | Canadian Institute For Research In Atmospheric Chemistry |