| Acronym | Meaning |
| MCQDT | Multichannel Quantum Defect Theory |
| CCM | Chemical Cleavage Of Mismatch |
| SASU | Source Apportionment |
| LMC | Laminated Metal Composite |
| HAL | Health Advisory Level |
| CI | Configuration Interaction |
| GDA | Glow Discharge Atomization (for Atomic Absorption Spectrometry) |
| BSG | Borosilicate Glass |
| ASASP | Active Scattering Aerosol Spectrometer Probe |
| DZP | (double Zeta)-polarization Contracted Gaussian Basis Set |