| Acronym | Meaning |
| FEGO | Floating Ellipsoidal Gaussian Orbital |
| AHU | Air Handling Unit |
| HSA | Human Serum Albumin |
| NIAID | National Institute Of Allergy And Infectious Diseases |
| CWP | Coal Workers' Pneumoconiosis |
| IPMI | International Precious Metals Institute |
| SIRMS | Stable Isotope Ratio Mass Spectrometry |
| PM | Particulate Matter |
| FSMRCC | Fock Space Multireference Coupled Cluster |
| DWRD | Drinking Water Research Division (EPA) |