| Acronym | Meaning |
| HCD | Hollow Cathode Discharge |
| MNDO/M | Modified MNDO |
| FLN | Fluorescence Line Narrowing |
| HITRAN | High-Resolution Transmission Molecular Absorption Database |
| CTEQ | The Coordinated Theoretical-Experimental Project On QCD |
| OVD | Optically Variable Device |
| GSCF | Generalized Self-consistent Field |
| DSS | Deep Seismic Sounding |
| NBD | Nucleotide Binding Domain |
| CSI | Chemical Shift Imaging (NMR) |