| Acronym | Meaning |
| WCBO | World Chess Boxing Organisation |
| PDQ | Pre-Defined Queries (Siebel Packages) - Pretty Damn Quick |
| LH | Lithuania (FIPS 10-4 Country Code) -Luteinising Hormone |
| PN | Piconewton |
| FENS | Federation Of European Neuroscience Societies |
| USDI | United States Department Of The Interior |
| RTI | Run-Time Infrastructure (Simulation) |
| IMHO | In My Humble Opinion |
| CPA | Certified Public Accountant |
| GPR | Ground-Penetrating Radar |