| Acronym | Meaning |
| CWR | Congestion Window Reduced |
| RADSL | Rate-Adaptive Digital Subscriber Line |
| CA | Certificate Authority |
| IIM | Internet Interaction Management |
| MUD | Multiple User (or Multi-User) Dungeon (Dimension) |
| ISDN | Integrated Services Digital Network |
| W3C | World Wide Web Consortium |
| UMB | Upper Memory Block |
| TPI | Tracks Per Inch |
| RTSP | Realtime Streaming Protocol |