| Acronym | Meaning |
| MCY | Matsuoka-Clementi-Yoshimine (potential Function) |
| ECF | Elemental Chlorine Free [as In Nonchlorine Bleaching] |
| VPE | Vapor-phase Epitaxy |
| CIBO | Council Of Industrial Boiler Owners |
| HSLA | High-strength Low-alloy (steel) |
| HTLV | Human T-lymphotropic Virus |
| CARB | California Air Resources Board |
| CPBA | Coulomb-projected Born Approximation |
| CIP | Configuration Interaction With Partner Orbitals |
| VBS | Virtual Bound State Model |