| Acronym | Meaning |
 | ORAU | Oak Ridge Associated Universities |
| CAC | California Association Of Criminalists - Chronic Asymptomatic [Disease] Carrier |
| EKG | Electrocardiogram (from German Elektrokardiogramm) |
| RH | Rhodium |
| LDC | Lesser Developing/Developed Country |
| XIII | Thirteen (in Roman Numerals) |
| DK | Denmark (ISO 3166 Digram) |
| ORNL | Oak Ridge National Laboratory |
| KARNAC | Knowledge Aided Retrieval In Activity Context |
| AWSIM | Air Warfare SIMulation |
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