| Acronym | Meaning |
| MSO | Multiple System Operator |
| WAK | Wake Island (ISO 3166 Trigram |
| MOO | Measure Of Outcome |
| IAUC | International Astronomical Union Circular |
| NUCC(C) | Nordic University Computer Club (Conference) |
| PN | Piconewton |
| SC | Cruiser Submarine (US Navy Hull Classification) - Saint Kitts And Nevis (FIPS 10-4 Country Code; From Saint Christopher) - Seychelles (ISO 3166 Digram) - South Carolina (postal Symbol) |
| USAF | United States Air Force |
| LIGO | Laser Interferometer Gravitational Wave Observatory |
| HP | IB -Hewlett-Packard Instrument/Interface Bus (first Implementation Of GP-IB |