| Acronym | Meaning |
 | HB | Hard Black |
| AFT | Antifreeze Protein |
| VSWR | Voltage Standing-wave Ratio |
| PNA | Pacific/North American |
| RFC | River Forecast Center |
| DOPLIGHT | Doppler And Lightning Program |
| IQSY | International Years Of The Quiet Sun |
| DCX | Delta Clipper Experimental |
| SMSC | Shared-Memory Supercomputer Systems |
| BMI | Battelle Memorial Institute |
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