| Acronym | Meaning |
| FYDP | Five-Year Defense Plan (U.S.) |
| IAU | International Association Of Universities - International Astronomical Union |
| A | Ampere |
| AD LOC. | Ad Locum (Latin |
| RCHA | Royal Canadian Horse Artillery (regiment) |
| SOD | School Of Dentistry - Statement Of Difference[s] - Statement Of Direction - Statement Of Documentation - Statement Of Duty/Duties |
| AT&T | American Telephone And Telegraph (U.S. Company |
| SME | Scan Mirror Electronics - Subject Matter Expert |
| SWORD | Subjective WORkload Dominance |
| OB | Obedience - Obligation - Obligatory - Obsolete - Obstetrics -Ocean Beach (California) - Off Break (cricket) - Old Bryanstonian - Order Of Battle - Outlet Box (electrical) -Overbought (stock Market) -Oversight Board |