| Acronym | Meaning |
| AGA | American Gas Association |
| CFP | Coefficient Of Fractional Parentage (method In Quantum Calcns.) |
| MMR | Mismatch Repair |
| PETN | Pentaerythritol Tetranitrate |
| RS-HFPT | Rayleigh-Schroedinger Hartree-Fock Perturbation Theory |
| CCSD-UED | CCSD-unrelaxed Energy Derivative |
| CCPA | Cluster Coherent Potential Approximation (for Electronic Structure Calcns.) |
| IMROX | Immersed Rotation Oxidation |
| STEREO | Solar TErrestrial RElations Observatory |
| DMCP | Double Microchannel Plate |