| Acronym | Meaning |
| PAMPA | Parallel Artificial Membrane Permeation Assay |
| MRD-CI | Multireference Double-excitation Configuration Interaction |
| LLS | Linear-least Squares |
| CCFO | Charge-charge Flux Overlap (model In Mol.-property Calcns.) |
| ERL | Environmental Research Laboratory |
| CLOT | Carbon Layer Open Tubular (column) |
| MSA | Methanesulfonic Acid (air Pollutant) |
| BTGA | Best Technology Generally Available |
| IAGC | International Association Of Geochemistry And Cosmochemistry |
| DELFIA | Dissociation-enhanced Lanthanide Fluoroimmunoassay |