| Acronym | Meaning |
| SANDS | Stratospheric Aitken Nuclei Detection System |
| MSA | Mammary Serum Antigen |
| GTF | Gaussian-type (wave) Function |
| HSEES | Hazardous Substances Emergency Events Surveillance |
| GIME | Gas Injection Membrane Extraction |
| EPW | Electron Plasma Wave |
| HMIS | Hazardous Material Identification System |
| FMO | Frontier Molecular Orbital |
| FCS | Fluorescence Correlation Spectroscopy |
| CHO | Complex Harmonic Oscillator (in Mol. Scattering Theory) |