| Acronym | Meaning |
| SIRMS | Stable Isotope Ratio Mass Spectrometry |
| ESIPT | Excited-state Intramolecular Proton Transfer |
| LEP | Light Emitting Polymer |
| FRDS | Federal Reporting Data System |
| ISDN | Integrated Services Digital Network |
| EFRTS | External-floating-roof Tanks |
| TO | Topological Orbital (in Graph Theory Of Molecules) |
| CSH | Centrifugal Sudden Hyperspherical (coordinate Reactive Scattering Code) |
| SAFIR | Smoke Gas Anal. By Fourier Transform IR Spectroscopy |
| MC-TD-SCF | Multiconfiguration-time Dependent-self-consistent Field |