| Acronym | Meaning |
| TOPS | Transparent Operating System |
| NURBS | Non-Uniform Rational B-Spline |
| NOS | Network Operating System |
| CSDGM | Content Standard For Digital Geospatial Metadata |
| ERP | Enterprise Resource Planning |
| XT | Extended |
| CDDI | Copper Data Distribution Interface |
| CWR | Congestion Window Reduced |
| ALU | Arithmetic (and) Logic Unit |
| IPSEC | Internet Protocol Security |