| Acronym | Meaning |
| PMO | Perturbational Molecular Orbital |
| GSMO | Ground-state Molecular Orbital |
| PMR | Proton Magnetic Resonance |
| RI | Remedial Investigation |
| LSTH | Liu-Siegbahn-Truhlar-Horowitz (potential-energy Surface) |
| PTGS | Picosecond Transient Grating Spectroscopy |
| SCTDA | Separated Channel Tamm-Dancoff Approxn. |
| RNAP | RNA Polymerase |
| AMPA | Alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic Acid |
| DRFM | Digital Radio-frequency Memory |