| Acronym | Meaning |
| GPCR | G-protein-coupled Receptor |
| HHG | High-order Harmonic Generation |
| HSC | Hematopoietic Stem Cells |
| WWTP | Wastewater Treatment Plant Or Process |
| EXRHF | Extended Restricted Hartree-Fock |
| SRASE | Symmetry Restricted Annihilation Of Single Excitations |
| LIRE | Laser Ionization Recombination Emission |
| CTMAB | Cetyl Trimethyl Ammonium Bromide (cationic Surfactant) |
| NHRL | Northern Hemisphere Reference Line |
| HWTC | Hazardous Waste Treatment Council |