| Acronym | Meaning |
| WSHS | Watershed Hydrologic System |
| IMPPT | Intermolecular Moeller-Plesset Perturbation Theory |
| CELIAS | Charge, Element And Isotope Analysis System |
| ICMR | Indian Council Of Medical Research |
| GLM | General Linear Model |
| GCM | Global Climate Model |
| CIHT | Configuration-interaction Hylleraas-type (wave Function) |
| QUAPI | Quasiadiabatic Propagator Path Integral Method |
| IGWMC | International Ground Water Modeling Center |
| FIT | Field Investigation Team (US EPA) |