| Acronym | Meaning |
| RLL | Run Length Limited |
| PMS | Pantone Matching System |
| WYSIWYG | What You See Is What You Get |
| DB | Database |
| SPIM | Spam Over Instant Messaging |
| LPM | Lifeline Port Module |
| DSU | Data Service Unit |
| MUSH | Multi-User Shared Hallucination |
| POSIX | Portable Operating System Interface For UNIX |
| CCITT | Consultative Committee For International Telephony And Telegraphy |