| Acronym | Meaning |
| UPOT | Union Pacific Oxidation Test |
| OSTL | Optically Stimulated Thermoluminescence |
| ATTF | Air Toxics Task Force |
| CARA | Chemical Assessments And Related Activities |
| ESE | Exact Static-exchange (approxn. In Scattering Calcns.) |
| FTR | Frustrated Total Reflection |
| HPSAM | H-point Standard Additions Method |
| RSM | Reduction Symmetry Method (in Crystal Field Theory) |
| CCMET | Coupled-cluster Many-electron Theory |
| POY | Partially Oriented Yarn (usually Synthetics |