| Acronym | Meaning |
 | BHF | Broken-symmetry Hartree-Fock |
 | IAHS | International Association Hydrological Sciences |
 | CETA | Carbon Emission Trajectory Assessment Model |
 | LHC | Large Hadron Collider |
 | PTIS | Photothermal Ionization Spectroscopy |
 | GCA | Generator Coordinate Approxn. |
 | RIS | Resonance Ionization Spectrometry |
 | ACSR | Aluminum Conductor Steel Reinforced |
 | MLR | Multilinear Regression |
 | SWANA | Solid Waste Association Of North America |