| Acronym | Meaning |
 | MR-MP | Multireference Moeller-Plesset (perturbation Theory) |
 | FREMSAAS | Frequency Modulated Simultaneous Atomic Absorption Spectrometry |
 | RASSCF | Restricted Active Space SCF |
 | WQI | Water Quality Index |
 | FY | Fiscal Year |
 | NCRPM | National Council On Radiation Protection And Measurements |
 | MSWLF | Municipal Solid Waste Landfill |
 | PIMIA | Potentiometric Ionophore-modulation Immunoassay |
 | NAMAS | National Measurement Accreditation Service (UK) |
 | NESDIS | National Environmental Satellite |