| Acronym | Meaning |
| VDU | Visual Display Unit |
| NPSO | Nonpaired Spatial Orbital |
| HSEOS | Hard-sphere Equation Of State |
| SETB | Semiempirical Tight Binding |
| ALS | Antilymphocyte Serum |
| CRL | Central Regional Laboratory |
| ASIS | American Society For Information Science |
| ISM | Interstellar Medium |
| ISC | Industrial Source Complex |
| KBDS | Knowledge-based Design System |