| Acronym | Meaning |
| CHP | Combined Heat Power |
| NIF | National Ignition Facility |
| TPN | Total Parenteral Nutrition |
| NWR | National Wildlife Refuge |
| UTLA | Ultra Thin Layer Activation |
| SCCT | Semiclassical Complex Trajectory |
| AESA | Association Of Environmental Scientists And Administrators |
| IODE | International Oceanographic Data/Information Exchange (IOC) |
| TEO | Topological Equivalent Orbital |
| BWEN | Brillouin-Wigner (second-order Perturbation Theory With) Epstein-Nesbet (energy Denominators) |