| Acronym | Meaning |
| HAO | Hydrogenic Atomic Orbital |
| RDA | Representational Difference Analysis |
| HMPGI | Hybrid Multiple-prism Grazing-incidence |
| TEBAC | Benzyltriethylammonium Chloride |
| MOPA | Master Oscillator Power Amplifier |
| HEAL | Human Exposure Assessment Location |
| FEOE | Full Equalization Of Orbital Electronegativity |
| ASEHF | Approximate Spin-extended Hartree-Fock |
| QRAR | Quantitative Retention-activity Relationship |
| ACTI | Advanced Computational Technology Initiative |