| Acronym | Meaning |
| OD | Outside Diameter |
| ERS | Earth Remote-Sensing Satellite |
| INFOTERRA | International Environmental Research And Referral Service Of UNEP |
| CCCMA | Canadian Centre For Climate Modeling And Analysis |
| GRM | Geopotential Research Mission |
| ESTP | Exploratory Shaft Test Plan |
| ICWF | Interactive Computer Worded Forecast |
| ERACF | Environmental Radiation Ambient Monitoring System |
| ARISTOTELES | Applications And Research Involving Space Technologies Observing The Earth's Field From Low Earth Orbiting Satellite |
| PISP | Polar Ice Sheet Program |