| Acronym | Meaning |
| MIMS | Magnetic Field Induced Mixing Of Sublevels |
| IPSC | Inhibitory Postsynaptic Current |
| SCM | Shell-correction Method (in Calcns. For Metal Clusters) |
| HSDB | Hazardous Substances Data Bank (NLM) |
| GBF | Gibbs-Bogolyubov-Feynman (variational Principle) |
| CTFA | Cosmetic, Toiletry And Fragrance Association |
| ID | Inhibitory Dose |
| GSNO | Ground-state Natural Orbital |
| IPOD | International Phase Of Ocean Drilling |
| TRDS | Text Retrieval Data System |