| Acronym | Meaning |
| W/ | With: Software W/Documentation. Typically Used In Advertising Or To Abbreviate Headings. Never Used In Formal Body Text. |
| CCRTS | Command And Control Research And Technology Symposium |
| PPQN | Pulses Per Quarter Note (ditto) |
| I.E. | Id Est (Latin |
| MK | Macedonian Language (ISO 639-1 Code) |
| USCG | United States Coast Guard |
| DK | Denmark (ISO 3166 Digram) |
| RSN | Real Soon Now (coined By Author Jerry Pournelle) |
| PADI | Professional Association Of Diving Instructors |
| XVIII | Eighteen (in Roman Numerals) |