| Acronym | Meaning |
| MALT | Mucosa-associated Lymphoid Tissue |
| TRAIL | Tumor Necrosis Factor Related Apoptosis Inducing Ligand |
| SCLS | Spectral Collocation (by) Least Squares |
| IPP | Isotactic Polypropylene |
| UATMP | Urban Air Toxics Monitoring Program |
| CELSS | Controlled Ecological Life Support System |
| PFBC | Pressurized Fluidized-bed Combustion (in Energy Technology) |
| DT | Dynamic Tear |
| SMOW | Standard Mean Ocean Water |
| BP | British Petroleum |