| Acronym | Meaning |
| MCL | Maximum Contaminant Level |
| SPM | Suspended Particulate Matter |
| QUASIMEME | Quality Assurance Of Information For Marine Environmental Monitoring In Europe |
| PICI | Positive-ion Chemical Ionization |
| UCAS-SCF | Unrestricted Complete Active Space Self-consistent Field |
| DMA | Differential Mobility Analyzer |
| PHC | Photonic Crystal |
| SE | Symmetric Eikonal (approxn. In Calcns. On Ion Scattering) |
| SPEG | Solid Phase Epitaxial Growth |
| IBR | Infectious Bovine Rhinotracheitis |