| Acronym | Meaning |
| PWL | PieceWise Linear (describing A Mathematical Function) |
| DEFCON | Defence Readiness Condition |
| GPT | GEC-Plessey Telecommunications - General Purpose Technology - Get Paid To Website |
| WYSIWYG | What You See Is What You Get (pronounced Wizzy-wig. See Entry For Derived Acronyms) |
| HSV | Herpes Simplex Virus - Hue Saturation Value (colour Model) |
| CD | Many |
| OMN | Oman (ISO 3166 Trigram) |
| CAPES | CAPability Evaluation System -Combined Arms Planning And Execution System |
| LTL | Lithuanian Litas (ISO 4217 Currency Code) |
| YA | Yoctoampere |