| Acronym | Meaning |
| RRN | Recurrence Rate Number |
| NAEC | U.S. Naval Air Engineering Center |
| SED | CERDEC Software Engineering Directorate |
| LW | Lawrencium (obsolete 1963) |
| SLAC | Stanford Linear Accelerator Center |
| JRE | Java Runtime Environment |
| BM | Bambara Language (ISO 639-1 Code) |
| GLUT | OpenGL Utility Toolkit |
| N | Nano |
| NAN | Not A Number (computing) |