| Acronym | Meaning |
 | SOHO | Solar And Heliospheric Observatory |
| DASD | (U.S.) Deputy Assistant Secretary Of Defense |
| IVECO | Industrial Vehicles Corporation |
| SS | Sand Storm (METAR Code) -Schutzstaffel (Nazi Elite Praetorian Guard) -U.S. Secret Service - Spanish Ship - Stainless Steel - Stockholm Skins -Submarine (US Navy Hull Classification) -Super Sport - Surface-to-Surface (missile) |
| PRI | Puerto Rico (ISO 3166 Trigram) |
| DBE | Dame Commander Of The Order Of The British Empire |
| AFSCN | U.S. Air Force Satellite Control Network |
| NHS | National Health Service (UK) |
| LAESI | Local Authority & Emergency Service Information |
| O | Oberst - Observer - Obstacle - Octal - Officer - Official - Oh - Operational - Operator - Oprah (magazine) - Outstanding -Oxygen |
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