| Acronym | Meaning |
| NOD | Nitrogenous Oxygen Demand |
| CRDL | Contract Required Detection Limit(s) |
| EMCI | Envirofacts Master Chemical Integrator |
| CHARM | Coupled Hydrosphere-Atmosphere Research Model |
| HSA | Hexanesulfonic Acid |
| MR-CEPM | Multireference-coupled Electron Pair Method |
| TFA | Thomas-Fermi-Amaldi (equation) |
| ICLS | Intracavity Laser Spectroscopy |
| HFB | Hartree Fock Bogolyubov |
| CFGE | Crossed-field Gel Electrophoresis |