| Acronym | Meaning |
![](file.png) | GWRTAC | Groundwater Remediation Technologies Analysis Center |
![](file.png) | GWSS | Groundwater Supply Survey |
![](file.png) | GWTR | Ground Water Treatment Rule |
![](file.png) | GX | Generalized Exchange |
![](file.png) | H-CI | Hylleraas-configuration Interaction |
![](file.png) | H-FABP | Heart Fatty Acid-binding Protein |
![](file.png) | HAA | Haloacetic Acid |
![](file.png) | HAA | Heterocyclic Aromatic Amine |
![](file.png) | HAADF | High-angle Annular Dark-field |
![](file.png) | HAART | Highly Active Antiretroviral Therapy |
![](file.png) | HAB | Harmful Algal Bloom |
![](file.png) | HAB | High-Alumina Basalt |
![](file.png) | HABR | Hybrid Anaerobic Baffled Reactor (for Wastewater Treatment) |
![](file.png) | HAC | High Alumina Cement |
![](file.png) | HAC | Hydrogen-assisted Cracking |
![](file.png) | HACCP | Pathogen Reduction And Hazard Analysis Critical Control Point |
![](file.png) | HACS | Hazard Assessment Computer System |
![](file.png) | HAD | High Aluminum Defect |
![](file.png) | HAD | Hollow Anode Discharge |
![](file.png) | HADD | Highest Average Daily Dose |
![](file.png) | HADES | High Activity Disposal Exptl. Site [for Radioactive Waste] |
![](file.png) | HADS | Health Assessment Documents |
![](file.png) | HAEC | Human Aortic Endothelial Cell |
![](file.png) | HAEC | Human Artificial Episomal Chromosome |
![](file.png) | HAF | Halogen Acid Furnaces (for Burning Halogenated Wastes |
![](file.png) | HAFID | Hydrogen Atmosphere Flame Ionization Detector |
![](file.png) | HAGAR | High Altitude Gas Analyzer |
![](file.png) | HAGIS | Headspace Analysis Gas-phase Infrared Spectroscopy |
![](file.png) | HAI | Histol. Activity Index |
![](file.png) | HAISP | High Altitude Interactive Science Platform |
![](file.png) | HAL | Health Advisory Level |
![](file.png) | HALOE | Halogen Occultation Experiment |
![](file.png) | HALS | Hindered-amine Light Stabilizers |
![](file.png) | HALT | Hydrate Addition At Low Temperature (for Sulfur Dioxide Removal From Flue Gases) |
![](file.png) | HAM | Hydrogenic Atoms In Molecules |
![](file.png) | HAM/N | Hydrogenic Atoms In Molecules |
![](file.png) | HAMA | Human Anti-mouse Antibody |
![](file.png) | HAMR | Heat Assisted Magnetic Recording |
![](file.png) | HAMS | Helium Atoms Measurement System |
![](file.png) | HAN | Halogenated Acetonitrile(s) |
![](file.png) | HAN | Heavy Aromatic Naphtha |
![](file.png) | HAN | Hydroxylamine Nitrate (salt) |
![](file.png) | HANS | Heavy Aromatic Naphtha Solvent |
![](file.png) | HAO | Hybrid Atomic Orbital |
![](file.png) | HAO | Hydrogenic Atomic Orbital |
![](file.png) | HAOM | Hybrid Atomic Orbital Model |
![](file.png) | HAP | Hazardous Air Pollutants |
![](file.png) | HAPEM | Hazardous Air Pollutant Exposure Model |
![](file.png) | HAPEMS | Hazardous Air Pollutant Enforcement Management System |
![](file.png) | HAPEX | Hydrological And Atmospheric Pilot Experiment |