| Acronym | Meaning |
| PBO | Polarized Born-Oppenheimer |
| TTL | Transistor-transistor Logic |
| RSR | Rapid Solidification Rate |
| SRASE | Symmetry Restricted Annihilation Of Single Excitations |
| HALS | Hindered-amine Light Stabilizers |
| VMT | Vehicle Miles Traveled |
| STIB | Stratosphere-Troposphere Interactions And The Biosphere |
| CIMS | Chemical Ionization Mass Spectrometry |
| NSCEP | National Service Center For Environmental Publications |
| MSMPR | Mixed-solution-mixed-product Removal |