| Acronym | Meaning |
| CGI | Combustible Gas Indicator |
| WSAP | Weighted Sensitivity Analysis Program |
| PISCES | Passive In-Situ Concn. Extn. Sampler |
| PSID | Photon Stimulated Ion Desorption |
| ICSI | Intracytoplasmic Sperm Injection |
| MELISA | Multianalyte Enzyme-linked Immunosorbent Assay |
| XRMF | X-ray Microfluorescence |
| NZRPA | Normalized Zero-range Potential Approxn. |
| SCCF | Self-consistent Continued Fraction |
| UNEP | United Nations Environmental Program |