| Acronym | Sense | Language | Topics |
|---|---|---|---|
| GSSC | Ground Support Simulation Computer | In English | → Computer hardware |
| GSSF | General Service Stock Fund | In English | |
| GSSI | Ground Support System Integration | In English | |
| GSSI&C | Ground Support Systems Installation and Checkout | In English | |
| GSSI&C | Group Support Systems Integration and Checkout | In English | |
| GSSPs | Global Boundary Stratotype Sections and Points | In English | → Stratigraphy |
| GSSS | General Secretariat of Social Security | In English | → Insurance |
| GST | Ground System Test | In English | |
| GSTAR | Saudi Arabian Communications Satellite | In English | → Astronautics → Telecommunications → Saudi Arabia |
| GSTDN | Ground Space Flight Tracking and Data Network | In English | → Astronomy → Astronautics |
| GSTDN | Ground Spacecraft Tracking and Data Network | In English | → Data → Astronomy → Astronautics |
| GSTP | Ground System Test Procedure | In English | |
| GSTS | Ground-Based Surveillance and Tracking System | In English | |
| GSU | Gas Servicer Unit | In English | |
| GSV | Glove Stop Valve | In English | |
| GSVC | Global Social Venture Competition | In English | → Economics |
| GSVOO | Ground Station Visibility of Orbiting Objects | In English | → Astronautics |
| GSVP | Ground Support Verification Plan | In English | |
| GT | Ground Team | In English | |
| GT | Ground Test | In English | |
| GT | Gyro Torque | In English | |
| GT&A | Ground Test and Acceptance | In English | → Quality management |
| GTA | Gas Tungsten Arc | In English | |
| GTA | Ground Test Access | In English | |
| GTA | Ground Test Article | In English | |
| GTA | Ground Test Assembly | In English | |
| GTA | Ground Torquing Assembly | In English | |
| GTARC | Golden Triangle Amateur Radio Club | In English | → Organizations and associations → Telecommunications |
| GTAW | Gas Tungsten Arc Welding | In English | |
| GTC | Glycol Trim Console | In English | |
| GTC | Ground Test Conductor | In English | |
| GTC | Genzyme Transgenics Corporation | In English | → Organizations and associations → Biotechnology → Genetics → Enzymes |
| GTCL | Goodyear Technical Center Luxembourg | In English | → Plastic industry → Luxembourg |
| GTCU | Ground Thermal Conditioning Unit | In English | |
| GTD | Getting Things Done | In English | |
| GTD | Genomic Threading Database | In English | → Genetics → Biochemistry, biophysics → Biotechnology |
| GTD | Global Terrorism Database | In English | → Politics |
| GTE | General Telephone and Electronics | In English | → Electronics → Telecommunications |
| GTF | Ground Test Facility | In English | |
| GTFF | Group of Terrestrial Freight Forwarders | In English | → Organizations and associations → Transport and postal services |
| GTI | Ground Test Instrumentation | In English | |
| GTLV | Government-Furnished Target Launch Vehicle | In English | → Public administration, government → Vehicle engineering |
| GTM | Ground Team Manager | In English | |
| GTM | Ground Test Missile | In English | → Military engineering |
| GTM | Ground Test Motor | In English | → Mechanical engineering |
| GTO | Generic Technical Order | In English | → Engineering, technology |
| GTO | Geosynchronous Transfer Orbit | In English | → Astronautics |
| GTP | General Test Plan | In English | |
| GtR | Gateway to Research (http://https://gtr.ukri.org/) | In English | → Databases → Research policy → United Kingdom |
| GTRI | Georgia Tech Research Institute (www.gtri.gatech.edu) | In English | → Research institutes → Applied sciences, technology → United States |
| GTS | GSM (Global System for Mobile Communications) Technical Specification | In English | → Telecommunications |
| GTS | General Test Support | In English | |
| GTS | Guidance Test Station | In English | → Vehicle engineering |
| GTT | Group Technology Time | In English | |
| GTU | Glycol Trim Unit | In English | |
| GTV | Ground Test Vehicle | In English | → Vehicle engineering |
| GTV | Ground Transport Vehicle | In English | → Vehicle engineering |
| GTVI | Gimbal angle and Translational Velocity Indicator | In English | → Astronautics |
| GUAVA | Group of Universities for the Advancement of Vietnamese Abroad | In English | → Organizations and associations → Higher education, universities → Language, linguistics, literature |
| GUCP | Ground Umbilical Carrier Plate | In English | |
| GUI | Graphical User Interface = IGU | Interfaz Gráfica de Usuario | In Spanish |
In English | → Human-computer interaction |
| GUIDE | Groningen University Institute for Drug Exploration | In English | → Research institutes → Pharmacology, toxicology |
| GUIDO | Guidance Officer | In English | |
| GUL | (php)Gtk User Language | In English | → Computer science |
| GUM | Generalized Upper Model | In English | → Programming languages |
| GUPH | Group for the Use of Psychology in History | In English | → Organizations and associations → Psychology → History |
| GUVZS | Glasgow University of Veterinary Zoological Society | In English | → Organizations and associations → Zoology → Veterinary medicine → United Kingdom |
| GVfM | Good Value for Money | In English | → Insurance |
| GVL | Ground Vibrations Laboratory | In English | → Research institutes → Acoustics |
| GVSC | Generic VHSIC Spacecraft Computer | In English | → Computer hardware → Astronautics |
| GVT | Ground Vibration Test | In English | → Acoustics |
| GVTA | Ground Vibration Test Article | In English | → Acoustics |
| GW | Gross Weight | In English | |
| GWA | General Work Area | In English | |
| GWAV | Great Waters Association of Vexillology | In English | → Associations → Flags, banners |
| GWP | Global Warming Potential | In English | |
| GWP | Global Water Partnership (www.gwpforum.org) | In English | → Organizations and associations → Hydrology → Environmental technology, water supply, waste management |
| GWT | Ground Winds Tower | In English | |
| GWT | Google Widget Toolkit | In English | → Software → Networks, communication |
| GX | Galaxy Express | In English | → Astronautics |
| H | Histidine = H | Histidin | In Bosnian = H | Histidina | In Catalan = H | Histidin | In Czech = H | Histidin | In German = H | Histidina | In Spanish = H | Histidino | In Esperanto = H | Histidine | In French = H | 히스티딘 | In Korean = H | Histidin | In Croatian = H | Histidin | In Indonesian = H | Istidina | In Italian = H | היסטידין | In Hebrew = H | Histidīns | In Latvian = H | Histidin | In Letzeburgesh = H | Histidinas | In Lithuanian = H | Hisztidin | LU = H | Histidine | In Dutch = H | ヒスチジン | In Japanese = H | Histidin | In Norwegian = H | Histydyna | In Polish = H | Histidina | In Portuguese = H | Гистидин | In Russian = H | Histidiini | In Finnish = H | Histidin | In Swedish = H | Histidin | In Turkish = H | Гістидин | In Ukrainian = H | 組氨酸 | In Chinese |
In English | → Biochemistry, biophysics |
| H | Hydrogen = H | Hydrogène | In French = H | Waterstof | In Afrikaans = H | هيدروجين | In Arabic = H | Hidróxenu | In Asturian = H | Hidrogen | In Azerbaijani = H | Wassastoff | In Austro-Bavarian = H | Вадарод | In Belarusian = H | Водород | In Bulgarian = H | হাইড্রোজেন | In Bengali = H | Hidrogen | In Breton = H | Vodonik | In Bosnian = H | Hidrogen | In Catalan = H | Idroheno | In Cebuano = H | Idrogenu | In Corsican = H | Vodík | In Czech = H | Водород | In Chuvash = H | Hydrogen | In Welsh = H | Brint | In Danish = H | Wasserstoff | In German = H | Υδρογόνο | In Greek = H | Hidrogeno | In Esperanto = H | Hidrógeno | In Spanish = H | Vesinik | In Estonian = H | Hidrogeno | In Basque = H | هیدروژن | In Persian = H | Vety | In Finnish = H | Hydrogen | In Faroese = H | Idrogjen | In Friulian = H | Hidrigin | In Irish = H | Haidreagain | In Scottish Gaelic = H | Hidróxeno | In Galician = H | હાઈડ્રોજન | In Gujarati = H | מימן | In Hebrew = H | हाइड्रोजन | In Hindi = H | Vodik | In Croatian = H | Idwojèn | In Haitian Creole = H | Hidrogén | In Hungarian = H | Ջրածին | In Armenian = H | Hydrogeno | In Interlingua = H | Hidrogen | In Indonesian = H | Hidrogeno | In Ido = H | Vetni | In Icelandic = H | Idrogeno | In Italian = H | 水素 | In Japanese = H | წყალბადი | In Georgian = H | អ៊ីដ្រូសែន | In Khmer (Cambodian) = H | ಜಲಜನಕ | In Kannada = H | 수소 | In Korean = H | Hîdrojen | In Kurdish = H | Hydrogenium | In Latin = H | Waasserstoff | In Letzeburgesh = H | Waterstof | In Limburgish = H | Idrògen | In Lombard = H | Idrojɛ́ní | In Lingala = H | Vandenilis | In Lithuanian = H | Ūdeņradis | In Latvian = H | Hauwai | In Māori = H | Водород | In Macedonian = H | ഹൈഡ്രജന് | In Malayalam = H | Устөрөгч | In Mongolian = H | हायड्रोजन | In Marathi = H | Hidrogen | In Malay = H | Āyōcoxqui | En Nahuatl = H | Waterstoff | In Low German = H | Waterstof | In Dutch = H | Hydrogen | In Nynorsk = H | Hydrogen | In Norwegian = H | Hidrogene | NOV = H | Idrogèn | In Occitan = H | Hiidrojen | In Pitcairn-Norfolk = H | Wodór | In Polish = H | Hidrogénio | In Portuguese = H | Yakuchaq | In Quechua = H | Hidrogen | In Romanian = H | Водород | In Russian = H | हाइड्रोजन | In Sanskrit = H | Idrògginu | In Sicilian = H | Vodik | In Serbo-Croatian = H | Vodík | In Slovak = H | Vodik | In Slovenian = H | Hidrogjeni | In Albanian = H | Водоник | In Serbian = H | Hidrogén | In Sundanese = H | Väte | In Swedish = H | Hidrojeni | In Swahili = H | ஹைட்ரஜன் | In Tamil = H | హైడ్రోజన్ | In Telugu = H | Ҳидроген | In Tajik = H | ไฮโดรเจน | In Thai = H | Idroheno | In Tagalog = H | Hidrojen | In Turkish = H | Водень | In Ukrainian = H | آبگر | In Urdu = H | Vodorod | In Uzbek = H | Hiđrô | In Vietnamese = H | Woaterstof | In Vlaams = H | Idrodjinne | In Walloon = H | 氢 | In Wu Chinese = H | היידראזשן | In Yiddisch = H | 氢 | In Chinese |
In English | → Chemistry |
| H-ASIA | H-Net List for Asian History and Culture | In English | → Civilization, culture, progress → Language, linguistics, literature |
| H-MEM | H-Net MidEast-Medieval | In English | |
| H-NEASIA | H-Net Network on Northeast Asian History and Culture | In English | → Civilization, culture, progress → History |
| HA | Hazard Analysis | In English | |
| HA | Higher Authority | In English | |
| HAA | High-Altitude Abort | In English | → Astronautics |
| HAADF | High Angle Annular Dark Field | In English | → Physics |
| HAADS | High-Altitude Attitude Determination System | In English | → Astronautics |
| HAAG | Handbook of Astronomy, Astrophysics and Geophysics | In English | → Serial publications, periodicals → Astronomy → Geophysics |
| HAARS | High-Altitude Attitude Reference System | In English | → Astronautics |
| HAART | Highly Active Antiretroviral Therapy | In English | → Pharmacology, toxicology → Infectious diseases |
| HAAS | High Altitude Aircrafts and Airships | In English | → Aeronautics, aircraft |
| HAB | High-Altitude Burst | In English | |
| HABP | Hypersonic Arbitrary Body Program | In English | → Aeronautics, aircraft → Astronautics |
| HAC | Heading Alignment Circle | In English | |
| HAC | Heading Alignment Cylinder | In English | |
| HAC | Hughes Aircraft Company | In English | → Aeronautics, aircraft |
| HAD | Historical Astronomy Division | In English | → Astronomy → History |
| HAD | Heat-Actuated Device | In English | |
| HAE | Hereditary Angioedema | In English | → Pathology |
| HAFB | Hill Air Force Base (www.hill.af.mil) | In English | → 358 → Aeronautics, aircraft → United States |
| HAFB | Holloman Air Force Base (www.holloman.af.mil) | In English | → 358 → Aeronautics, aircraft → United States |
| HAG | Historical Archives of Goa | In English | → Libraries → History |
| HAHR | Hispanic American Historical Review | In English | → Serial publications, periodicals → History → United States |
| HAIL | Hmong American Institute for Learning | In English | → Organizations and associations → Education → United States |
| HAINS | High Accuracy Inertial Navigation System | In English | |
| HAINS | High-Accuracy Inertial Navigation System | In English | → Vehicle engineering |
| HAK | Horizontal Access Kit | In English | |
| HAL | High-order Articulated Language | In English | |
| HAL | High-order Assembly Language | In English | → Programming languages |
| HAL | Houston Aerospace Language | In English | → Programming languages → Aeronautics, aircraft → Astronautics → United States |
| HAL | Hardware Abstraction Layer | In English | → Software → Computer hardware |
| HAL | Heuristically programmed ALgorithmic computer | In English | → Computer hardware → Artificial intelligence → Cinema, movies |
| HALCA | Highly Advanced Laboratory for Communications and Astronomy | In English | → Astronautics → Telecommunications → Astronomy |
| HALO | High-Altitude Large Optics | In English | |
| HALOE | Halogen Occultation Experiment | In English | |
| HalRe | Hale Observatories Reprints | In English | → Serial publications, periodicals → Astronomy |
| HALS | High-order Assembly Language for Shuttle | In English | → Astronautics |
| HALS | High-order Programming Language for Spacelab usage | In English | → Programming languages |
| HALTE | Hologram Authentication Labels Technologies | In English | → Graphic industries, printing, publishing |
| HAM | Height Adjustment Maneuver | In English | |
| HAM | Hold-and-Modify | In English | → Computer hardware → Graphical processing |
| HAMP | Handling and Moving Procedure | In English | |
| HANE | High-Altitude Nuclear Explosion | In English | → Nuclear technology → Military engineering |
| HAP | Hardware Allocation Panel | In English | → Computer hardware |
| HAP | High-Speed Arithmetic Processor | In English | → Computer hardware → Mathematics |
| HAP | Honeywell Array Processor | In English | |
| HAP | Homeowners Assistance Program | In English | → Accommodation |
| HAPR | Harvard Asia Pacific Review | In English | → Serial publications, periodicals → Area studies |
| HAR | Human Accelerated Region(s) | In English | |
| HAR | Hazard Analysis Report | In English | |
| HAR | Hyperacute rejection | In English | → Immunology and allergy → Surgery, orthopaedics, ophthalmology |
| HAR | Hebrew Annual Review | In English | → Serial publications, periodicals → Judaism |
| HarAC | Harvard College Observatory Announcement Card | In English | → Serial publications, periodicals → Astronomy |
| HarAR | Harvard College Observatory Annual Report | In English | → Serial publications, periodicals → Astronomy |
| HARC | Houston Advanced Research Center (www.harc.edu) | In English | → Research institutes → United States |
| HARCANA | High Aspect Ratio Carbon-based Nanocomposites (www.harcana.eu) | In English | → Materials science |
| HarCi | Harvard College Observatory Circular | In English | → Serial publications, periodicals → Astronomy |
| HARIMAU | Hydrometeorological Array for ISV-Monsoon Automonitoring (www.jamstec.go.jp/iorgc/harimau/) | In English | → Meteorology, climatology → Hydrology |
| HARM | High-speed Anti-Radar Missile | In English | → Military engineering |
| HarPa | Harvard College Observatory Papers | In English | → Serial publications, periodicals → Astronomy |
| HarRe | Harvard College Observatory Reprints | In English | → Serial publications, periodicals → Astronomy |
| HART | Highway Addressable Remote Transducer | In English | → Networks, communication → Telecommunications |
| HAS | High-Altitude Sensor | In English | |
| HAS | Hold-Down Alignment Support | In English | |
| HAS | Hydraulic Actuation System | In English | |
| HASC | High-Altitude Surveillance Concept | In English | |
| HAST | High-Altitude Supersonic Target | In English | |
| HAVSOM | Heraldry and Vexilology Society of Malta | In English | → Associations → Flags, banners → Malta |
| HawRe | University of Hawaii Reprints | In English | → Serial publications, periodicals |
| HBB | Horizons in Biochemistry and Biophysics | In English | → Serial publications, periodicals → Biochemistry, biophysics |
| HBBW | Half-Beam Bandwidth | In English | |
| HBGP | Honey Bee Genome Project (www.hgsc.bcm.tmc.edu/projects/honeybee/) = HBGP | Honigbienen-Genomprojekt | In German |
In English | → Genetics |
| HBM | Homing Ballistic Missile | In English | → Military engineering |
| HBP | Handbook of Biological Physics | In English | → Serial publications, periodicals → Biochemistry, biophysics |
| HBR | High Bit Rate | In English | |
| HBT | Heflex Bioengineering Test | In English | → Biotechnology |
| HBT | Horizons in Biblical Theology | In English | → Serial publications, periodicals → Religion, theology |
| HBW | Hot Bridge Wire | In English | |
| HC | Hand Control | In English | |
| HC | Head Count | In English | |
| HC | Hybrid Computer | In English | → Computer hardware |
| HC | Headcount | In English | |
| HC | Humanitarian Coordinator | In English | |
| HCAC | Hindu-Christian Studies Academic Discussion List | In English | → Indian religions → Christianity |
| HCCB | Hardware Configuration Control Board | In English | → Computer hardware |
| HCCE | Historic Conference Centres of Europe | In English | |
| HCDB | Historical Cost Data Base | In English | → Prices |
| hCEA | Human Carcinoembryonic Antigen | In English | → Biological sciences |
| HCF | High-Cycle Fatigue | In English | |
| HCF | HIM Configuration File | In English | → Files |
| hCG | Human Chorionic Gonadotrophin | In English | → Physiology → Obstetrics |
| HCHy | Hovering Craft and Hydrofoil | In English | → Serial publications, periodicals → Vehicle engineering |
| HCI | Highes Communications, Inc | In English | |
| HCI | Hardness-Critical Item | In English | |
| HCITE | Horizontal Cargo Integration Test Equipment | In English | |
| HCL | Hardware Control Language | In English | → Programming languages → Computer hardware |
| HCM | Human Capital Management | In English | → Personnel management |
| HCM | Hard-Copy Module | In English | |
| HCM | Highway Capacity Manual | In English | → Transport and postal services |
| HCMC | Ho Chi Minh City | In English | → Geography |
| HCMM | Heat Capacity Mapping Mission | In English | |
| HCNM | High Commissioner on National Minorities (www.osce.org/hcnm/) | In English | → International relations → Fundamental rights |
| HCOPIL | Hague Conference on Private International Law | In English | → Organizations and associations → International law |
| HCP | Hydraulic Circulation Pump | In English | → Mechanical engineering |
| HCR | Handprint Character Recognition | In English | → Writing systems → Computer-based techniques |
| HCR | Human Rights Committee (www.ohchr.org) | In English | → United Nations → Human rights → Fundamental rights |
| HCRB | Hardware Configuration Review Board | In English | → Computer hardware |
| HCS | High-Carbon Steel | In English | → Metallurgy |
| HCSHT | High-Carbon Steel Heat-Treated | In English | → Metallurgy |
| HCSL | Hybrid Computation and Simulation Laboratory | In English | → Research institutes → Computer simulation |
| HCSP | Health Care Savings Plan | In English | → Public health and hygiene |
| HCT | Hot Cell Technology | In English | → Nuclear, atomic, and molecular physics → 54458 → Nuclear technology |
| HCU | Hydraulic Charging Unit | In English | → Mechanical engineering |
| HCV | Helium Check Valve | In English | → Mechanical engineering |
| HD | Hungtington's Disease | In English | → Neurology |
| HD | Harmonization Document | In English | → 0069 |
| HD | Hemidesmosome | In English |