| Acronym | Meaning |
| SPC | Small Particle Count (or Counter) |
| OR | Operational Research |
| SRC | Science Research Council |
| MMM | Mesoscale And Microscale Meteorology |
| TOSS | Tiros Operational Satellite System |
| IGY | International Geophysical Year |
| EXPRESSO | EXPeriment For REgional Sources And Sinks Of Oxidants |
| MCA | Manufacturing Chemists Association |
| USSDM | Unidata System For Scientific Data Management |
| BSDI | Berkeley Software Design |