| Acronym | Meaning |
| ORNL | Oak Ridge National Laboratory |
| UNIX | A Computer Operating System Developed By AT&T And Modified Extensively By The University Of California At Berkeley |
| IMP | Interface Message Processor ARPANET |
| ICH | Inter-Union Commission On The Lithosphere |
| IGFA | Intergovernmental Funding Agency |
| CDT | Conventional Defense Technology |
| STERAO | Stratosphere-Troposphere Experiments |
| ISS | Information Support Services |
| ADI | Alternating Direction Implicit |
| 4DDD | Four-Dimensional Data Assimilation |