| Acronym | Meaning |
| PAO | Polarized Atomic Orbital |
| CIBL | Convective Internal Boundary Layer |
| CSWRCB | California State Water Resources Control Board |
| AAPS | American Association Of Pharmaceutical Scientists |
| PUMP | Pure (alpha-spin-state) Unrestricted Moeller-Plesset Nth-order (wave Function) |
| PCO | Perturbational Crystal Orbital |
| OW | Office Of Water |
| CINC | Cytokine-induced Neutrophil Chemoattractant |
| CIH | Certified Industrial Hygienist |
| UCHF | Uncoupled Hartree-Fock |