| Acronym | Meaning |
| MAC | Methyl Allyl Chloride |
| PUHF | (spin)-projected Unrestricted Hartree-Fock |
| ICP-ROA | Incident Circular Polarization Raman Optical Activity |
| FIFRA | Federal Insecticide |
| HEIR | High Energy Ion Recoil |
| RSC | Risk Specific Concentration |
| IAEA | International Atomic Energy Agency |
| NDT | Nondestructive Testing |
| ECCF | Exchange Correlated Crystal Field |
| PCAD | Power Conditioning And Distribution (in Spacecraft) |