| Acronym | Meaning |
| SPACECOM | (U.S.) Space Command |
| PTAN | Precision Terrain Aided Navigation |
| HAART | Highly Active Anti-Retroviral Therapy |
| MLK | Martin Luther King |
| NEAT | Near-Earth Asteroid Tracking |
| PKMS | Pulemet Kalashnikova Modernizirovanniy Stepanova (Russian ???? ??????? ??????????? ????????????????? ????????? |
| MHZ | Megahertz |
| IAUC | International Astronomical Union Circular |
| NDO | Ndonga Language (ISO 639-2 Code) |
| IJN | Imperial Japanese Navy (World War II) |