| Acronym | Meaning |
| LOF | Lack Of Fit |
| EFS | Event-free Survival |
| RMLC | Recommended Maximum Contaminant Level |
| ENAA | Epithermal Neutron Activation Analysis |
| RAPIDS | Regional Air Pollutant Inventory Development System |
| TBBA | Tightly-bound-on-the-bond Approxn. (band Structure Crystal) |
| RIA | Regulatory Impact Analysis |
| ANO | Atomic Natural Orbital |
| POF | Plastic Optical Fiber |
| PICP | Carboxyterminal Propeptide Of Type I Procollagen |