| Acronym | Meaning |
| MVO | Modified Virtual Orbital |
| EMZDO | Exchange Modified Zero Differential Overlap |
| PAPP-A | Pregnancy-associated Plasma Protein A |
| RHDV | Rabbit Hemorrhagic Disease Virus |
| PAA | Photon Activation Analysis |
| PHH | Planar Halogenated Hydrocarbon |
| ELIFA | Enzyme-linked Immunofiltration Assay |
| BKC | Born-von Karman Cell (model For Electronic-structure Calcn.) |
| CISP | Canadian Indoor Source Profile |
| CVMO | Cluster Valence Molecular Orbital |