| Acronym | Meaning |
| IVAP | Intimate Valence Alternation Pairs (bonding Model In Electronic Structure Calcns.) |
| MARF | Magic Angle In The Rotating Frame |
| GLF | Generalized Laguerre Function |
| LORG | Localized Orbital-local Origin |
| CNDO/2-FPP | Complete Neglect Of Differential Overlap With Finite Perturbation And Polarization |
| LSTH | Liu-Siegbahn-Truhlar-Horowitz (potential-energy Surface) |
| IRIS | Incorporated Research Institutes For Seismology |
| DMCP | Double Microchannel Plate |
| POF | Polymer Optical Fiber |
| ECPMET | Extended Coupled Pair Many Electron Theory |