| Acronym | Meaning |
| GS | Gelius-Siegbahn (MO Approxn.) |
| DMU | WOCE Data Management Unit (USA) (now Part Of DIU) |
| RONALD | Rocketborne Optical Neutral Gas Analyzer With Laser Diodes |
| SOTE | Standard Oxygen Transfer Efficiency (of Aeration Diffusers) |
| FNSI | Finding Of No Significant Impact |
| MOSMO | Maximum Overlap Symmetry Molecular Orbital |
| SAC | Symmetry-adapted Cluster (expansion Method For Calcg. Wave Functions) |
| HSIA | Halogenated Solvents Industry Alliance |
| MCPF | Modified Coupled-pair Functional (method In CI Calcns.) |
| IRGCHAZ | Intercritically Reheated Grain-coarsened Heat-affected Zone |