| Acronym | Meaning |
| RIDA | Reverse Isotope Dilution Analysis |
| DCC | Discharge Consent Conditions |
| FGRM | Fourier-grid R-matrix Formalism (in Scattering Problems) |
| CMDL | Climate Monitoring And Diagnostics Laboratory (NOAA Boulder |
| DWS | Drinking Water Standard |
| RPP | Reverse Pulse Polarography |
| SPARC | Secreted Protein Acidic And Rich In Cysteine |
| SAMO | Simulated Ab Initio Molecular Orbital |
| NCRPM | National Council On Radiation Protection And Measurements |
| STEP | Stratosphere Troposphere Exchange Project |