| Acronym | Meaning |
 | THG | Third Harmonic Generation |
| PERV | Porcine Endogenous Retrovirus |
| CD | Coulomb Dipole (in Electron-atom Impact Ionization Calcns.) |
| PSA | Pressure Swing Adsorption (gaseous Waste Treatment) |
| NSR | New Source Review |
| VGAAS | Vapor Generation Atomic Absorption Spectrometry |
| HST | Hubble Space Telescope |
| NEMCA | Non-faradaic Electrochemical Modification Of Catalytic Activity |
| LET | Linear Energy Transfer (in Spacecraft Power Systems) |
| CPSS | Chemist's Personal Software Series |
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