| Acronym | Meaning |
![](file.png) | HSI | Heat Stress Index |
![](file.png) | HSI | Hyperthermal Surface Ionization |
![](file.png) | HSIA | Halogenated Solvents Industry Alliance |
![](file.png) | HSK | Hylleraas Scherr Knight (variational Perturbation Procedure) |
![](file.png) | HSL | Hazardous Substance List |
![](file.png) | HSLA | High-strength Low-alloy (steel) |
![](file.png) | HSOS-CCSD | High-spin Open-shell-CCSD |
![](file.png) | HSP | Heat Shock Protein |
![](file.png) | HSPF | Hydrological Simulation Program-Fortran |
![](file.png) | HSQC | Heteronuclear Single Quantum Coherence |
![](file.png) | HSRC | Hazardous Substance Research Center |
![](file.png) | HSS | High-speed Steel |
![](file.png) | HSSM | Hydrocarbon Spill Simulation Model |
![](file.png) | HSSPME | Headspace Solid-phase Microextraction |
![](file.png) | HST | Hubble Space Telescope |
![](file.png) | HSV | Herpes Simplex Virus |
![](file.png) | HSW | Health And Safety At Work Act 1974 |
![](file.png) | HSWA | Hazardous And Solid Waste Amendments Of 1984 |
![](file.png) | HSX | Helically Symmetric Experiment |
![](file.png) | HT | Herzberg-Teller (wave Functions) |
![](file.png) | HT-EOVC | High-temperature Engine Oil Viscosity Classification |
![](file.png) | HTCGC | High Temperature Capillary Gas Chromatography |
![](file.png) | HTCO | High Temperature Catalytic Oxidation |
![](file.png) | HTD | Hancock-Truhlar-Dykstra (potential Energy Surface) |
![](file.png) | HTGR | High-Temperature Gas Reactor |
![](file.png) | HTHS | High-temperature High-shear |
![](file.png) | HTL | Hole Transport Layer |
![](file.png) | HTLA | Heat-treatable Low Alloy (steel) |
![](file.png) | HTLV | Human T-lymphotropic Virus |
![](file.png) | HTML | Hypertext Markup Language |
![](file.png) | HTMR | High Temperature Metal Recovery |
![](file.png) | HTOS | High Throughput Organic Synthesis |
![](file.png) | HTP | Helical Twisting Power |
![](file.png) | HTP | High Temperature And Pressure |
![](file.png) | HTPB | Hydroxy-terminated Polybutadiene |
![](file.png) | HTS | Hadamard Transfer Spectrometry |
![](file.png) | HTS | High Temperature Superconductor |
![](file.png) | HTS | High-throughput Screening |
![](file.png) | HTSC | High Temperature Superconductor |
![](file.png) | HTSS | Hierarchical Tree Substructure Search |
![](file.png) | HTST | High-temperature Short-time |
![](file.png) | HTSUS | Harmonized Tariff System U.S. |
![](file.png) | HTTP | Hypertext Transfer Protocol |
![](file.png) | HTU | Height Of Transfer Unit (in Packed Tower Aeration System) |
![](file.png) | HTXRD | High-temperature X-ray Diffraction |
![](file.png) | HUD | Housing And Urban Development |
![](file.png) | HUDF | Hubble Ultra Deep Field |
![](file.png) | HUFA | Highly Unsaturated Fatty Acids |
![](file.png) | HUG | HART User Group |
![](file.png) | HUGO | Human Genome Organization |