

| Acronym | Sense | Language | Topics | 
|---|---|---|---|
| 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 | Histidin = (look above) | In Bosnian | → Biochemistry, biophysics | 
| H | Histidina = (look above) | In Catalan | → Biochemistry, biophysics | 
| H | Histidin = (look above) | In Czech | → Biochemistry, biophysics | 
| H | Histidin = (look above) | In German | → Biochemistry, biophysics | 
| H | Histidina = (look above) | In Spanish | → Biochemistry, biophysics | 
| H | Histidino = (look above) | In Esperanto | → Biochemistry, biophysics | 
| H | Histidine = (look above) | In French | → Biochemistry, biophysics | 
| H | 히스티딘 = (look above) | In Korean | → Biochemistry, biophysics | 
| H | Histidin = (look above) | In Croatian | → Biochemistry, biophysics | 
| H | Histidin = (look above) | In Indonesian | → Biochemistry, biophysics | 
| H | Istidina = (look above) | In Italian | → Biochemistry, biophysics | 
| H | היסטידין = (look above) | In Hebrew | → Biochemistry, biophysics | 
| H | Histidīns = (look above) | In Latvian | → Biochemistry, biophysics | 
| H | Histidin = (look above) | In Letzeburgesh | → Biochemistry, biophysics | 
| H | Histidinas = (look above) | In Lithuanian | → Biochemistry, biophysics | 
| H | Hisztidin = (look above) | [LU] | → Biochemistry, biophysics | 
| H | Histidine = (look above) | In Dutch | → Biochemistry, biophysics | 
| H | ヒスチジン = (look above) | In Japanese | → Biochemistry, biophysics | 
| H | Histidin = (look above) | In Norwegian | → Biochemistry, biophysics | 
| H | Histydyna = (look above) | In Polish | → Biochemistry, biophysics | 
| H | Histidina = (look above) | In Portuguese | → Biochemistry, biophysics | 
| H | Гистидин = (look above) | In Russian | → Biochemistry, biophysics | 
| H | Histidiini = (look above) | In Finnish | → Biochemistry, biophysics | 
| H | Histidin = (look above) | In Swedish | → Biochemistry, biophysics | 
| H | Histidin = (look above) | In Turkish | → Biochemistry, biophysics | 
| H | Гістидин = (look above) | In Ukrainian | → Biochemistry, biophysics | 
| H | 組氨酸 = (look above) | In Chinese | → Biochemistry, biophysics | 
| H | Hydrogène = 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 | Hydrogen | In English = 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 French | → Chemistry | 
| H | Waterstof = (look above) | In Afrikaans | → Chemistry | 
| H | هيدروجين = (look above) | In Arabic | → Chemistry | 
| H | Hidróxenu = (look above) | In Asturian | → Chemistry | 
| H | Hidrogen = (look above) | In Azerbaijani | → Chemistry | 
| H | Wassastoff = (look above) | In Austro-Bavarian | → Chemistry | 
| H | Вадарод = (look above) | In Belarusian | → Chemistry | 
| H | Водород = (look above) | In Bulgarian | → Chemistry | 
| H | হাইড্রোজেন = (look above) | In Bengali | → Chemistry | 
| H | Hidrogen = (look above) | In Breton | → Chemistry | 
| H | Vodonik = (look above) | In Bosnian | → Chemistry | 
| H | Hidrogen = (look above) | In Catalan | → Chemistry | 
| H | Idroheno = (look above) | In Cebuano | → Chemistry | 
| H | Idrogenu = (look above) | In Corsican | → Chemistry | 
| H | Vodík = (look above) | In Czech | → Chemistry | 
| H | Водород = (look above) | In Chuvash | → Chemistry | 
| H | Hydrogen = (look above) | In Welsh | → Chemistry | 
| H | Brint = (look above) | In Danish | → Chemistry | 
| H | Wasserstoff = (look above) | In German | → Chemistry | 
| H | Υδρογόνο = (look above) | In Greek | → Chemistry | 
| H | Hydrogen = (look above) | In English | → Chemistry | 
| H | Hidrogeno = (look above) | In Esperanto | → Chemistry | 
| H | Hidrógeno = (look above) | In Spanish | → Chemistry | 
| H | Vesinik = (look above) | In Estonian | → Chemistry | 
| H | Hidrogeno = (look above) | In Basque | → Chemistry | 
| H | هیدروژن = (look above) | In Persian | → Chemistry | 
| H | Vety = (look above) | In Finnish | → Chemistry | 
| H | Hydrogen = (look above) | In Faroese | → Chemistry | 
| H | Idrogjen = (look above) | In Friulian | → Chemistry | 
| H | Hidrigin = (look above) | In Irish | → Chemistry | 
| H | Haidreagain = (look above) | In Scottish Gaelic | → Chemistry | 
| H | Hidróxeno = (look above) | In Galician | → Chemistry | 
| H | હાઈડ્રોજન = (look above) | In Gujarati | → Chemistry | 
| H | מימן = (look above) | In Hebrew | → Chemistry | 
| H | हाइड्रोजन = (look above) | In Hindi | → Chemistry | 
| H | Vodik = (look above) | In Croatian | → Chemistry | 
| H | Idwojèn = (look above) | In Haitian Creole | → Chemistry | 
| H | Hidrogén = (look above) | In Hungarian | → Chemistry | 
| H | Ջրածին = (look above) | In Armenian | → Chemistry | 
| H | Hydrogeno = (look above) | In Interlingua | → Chemistry | 
| H | Hidrogen = (look above) | In Indonesian | → Chemistry | 
| H | Hidrogeno = (look above) | In Ido | → Chemistry | 
| H | Vetni = (look above) | In Icelandic | → Chemistry | 
| H | Idrogeno = (look above) | In Italian | → Chemistry | 
| H | 水素 = (look above) | In Japanese | → Chemistry | 
| H | წყალბადი = (look above) | In Georgian | → Chemistry | 
| H | អ៊ីដ្រូសែន = (look above) | In Khmer (Cambodian) | → Chemistry | 
| H | ಜಲಜನಕ = (look above) | In Kannada | → Chemistry | 
| H | 수소 = (look above) | In Korean | → Chemistry | 
| H | Hîdrojen = (look above) | In Kurdish | → Chemistry | 
| H | Hydrogenium = (look above) | In Latin | → Chemistry | 
| H | Waasserstoff = (look above) | In Letzeburgesh | → Chemistry | 
| H | Waterstof = (look above) | In Limburgish | → Chemistry | 
| H | Idrògen = (look above) | In Lombard | → Chemistry | 
| H | Idrojɛ́ní = (look above) | In Lingala | → Chemistry | 
| H | Vandenilis = (look above) | In Lithuanian | → Chemistry | 
| H | Ūdeņradis = (look above) | In Latvian | → Chemistry | 
| H | Hauwai = (look above) | In Māori | → Chemistry | 
| H | Водород = (look above) | In Macedonian | → Chemistry | 
| H | ഹൈഡ്രജന് = (look above) | In Malayalam | → Chemistry | 
| H | Устөрөгч = (look above) | In Mongolian | → Chemistry | 
| H | हायड्रोजन = (look above) | In Marathi | → Chemistry | 
| H | Hidrogen = (look above) | In Malay | → Chemistry | 
| H | Āyōcoxqui = (look above) | En Nahuatl | → Chemistry | 
| H | Waterstoff = (look above) | In Low German | → Chemistry | 
| H | Waterstof = (look above) | In Dutch | → Chemistry | 
| H | Hydrogen = (look above) | In Nynorsk | → Chemistry | 
| H | Hydrogen = (look above) | In Norwegian | → Chemistry | 
| H | Hidrogene = (look above) | [NOV] | → Chemistry | 
| H | Idrogèn = (look above) | In Occitan | → Chemistry | 
| H | Hiidrojen = (look above) | In Pitcairn-Norfolk | → Chemistry | 
| H | Wodór = (look above) | In Polish | → Chemistry | 
| H | Hidrogénio = (look above) | In Portuguese | → Chemistry | 
| H | Yakuchaq = (look above) | In Quechua | → Chemistry | 
| H | Hidrogen = (look above) | In Romanian | → Chemistry | 
| H | Водород = (look above) | In Russian | → Chemistry | 
| H | हाइड्रोजन = (look above) | In Sanskrit | → Chemistry | 
| H | Idrògginu = (look above) | In Sicilian | → Chemistry | 
| H | Vodik = (look above) | In Serbo-Croatian | → Chemistry | 
| H | Vodík = (look above) | In Slovak | → Chemistry | 
| H | Vodik = (look above) | In Slovenian | → Chemistry | 
| H | Hidrogjeni = (look above) | In Albanian | → Chemistry | 
| H | Водоник = (look above) | In Serbian | → Chemistry | 
| H | Hidrogén = (look above) | In Sundanese | → Chemistry | 
| H | Väte = (look above) | In Swedish | → Chemistry | 
| H | Hidrojeni = (look above) | In Swahili | → Chemistry | 
| H | ஹைட்ரஜன் = (look above) | In Tamil | → Chemistry | 
| H | హైడ్రోజన్ = (look above) | In Telugu | → Chemistry | 
| H | Ҳидроген = (look above) | In Tajik | → Chemistry | 
| H | ไฮโดรเจน = (look above) | In Thai | → Chemistry | 
| H | Idroheno = (look above) | In Tagalog | → Chemistry | 
| H | Hidrojen = (look above) | In Turkish | → Chemistry | 
| H | Водень = (look above) | In Ukrainian | → Chemistry | 
| H | آبگر = (look above) | In Urdu | → Chemistry | 
| H | Vodorod = (look above) | In Uzbek | → Chemistry | 
| H | Hiđrô = (look above) | In Vietnamese | → Chemistry | 
| H | Woaterstof = (look above) | In Vlaams | → Chemistry | 
| H | Idrodjinne = (look above) | In Walloon | → Chemistry | 
| H | 氢 = (look above) | In Wu Chinese | → Chemistry | 
| H | היידראזשן = (look above) | In Yiddisch | → Chemistry | 
| H | 氢 = (look above) | In Chinese | → 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 | 
| H5N1 | Hämagglutinin 5 Neuraminidase 1 | In German | → Enzymes → Blood and circulatory system → Cardiology | 
| HA | Help-Alfabeto | In Esperanto | → Writing systems | 
| 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 | |
| HABM | Harmonisierungsamt für den Binnenmarkt (http://oami.europa.eu) = OHIM | Office for Harmonization in the Internal Market | In English = OHMI | Oficina per a l'Harmonització del Mercat Interior | In Catalan = OAMI | Oficina de Armonización del Mercado Interior | In Spanish = UAMI | Ufficio per l'Armonizzazione nel Mercato Interno | In Italian = OHMI | Office de l'Harmonisation dans le Marché Intérieur | In French = IHMI | Instituto de Harmonização do Mercado Interno | In Portuguese | In German | → European Union → Industrial property → Artistic property → Europe | 
| 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 | 
| HACEK | Haemophilus, Actinobacillus, Cardiobacterium, Eikenella & Kingella | In Latin | → Microbiology → Infectious diseases | 
| HAD | Historical Astronomy Division | In English | → Astronomy → History | 
| HAD | Heat-Actuated Device | In English | |
| HADOPI | Haute Autorité pour la Diffusion des Oeuvres et la Protection des droits sur Internet | In French | → Central administration → Artistic property | 
| 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 | Hyper Articles en Ligne (http://hal.archives-ouvertes.fr) | In French | → Libraries → Research policy → France | 
| 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 | 
| HALDE | Haute Autorité de Lutte contre les Discriminations et pour l'Égalité | In French | → Fundamental rights | 
| 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 | |
| HamS | Hamburger Sternwarte Sonderdrucke | In German | → Serial publications, periodicals → Astronomy | 
| HANE | High-Altitude Nuclear Explosion | In English | → Nuclear technology → Military engineering | 
| HanEA | Hanoja Esperanto-Asocio | In Esperanto | → Associations → Artificial languages (linguistics) | 
| 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 | 
| HAP | Hochschule für Angewandte Psychologie Zürich | In German | → Specialized or polytechnical colleges → Psychology | 
| HAP | Hipertensió Arterial Pulmonar = PAH | Pulmonalarterielle Hypertonie | In German = PH | Pulmonale Hypertonie | In German = PHT | Pulmonale Hypertonie | In German = HTAP | Hipertensió Arterial Pulmonar | In Catalan = PH | Pulmonary Hypertension | In English = HTP | Hipertensión Pulmonar | In Spanish = HTAP | Hypertension Artérielle Pulmonaire | In French = PH | Pulmonale Hypertensie | In Dutch = ЛГ | Лёгочная гиперте́нзия | In Russian = PAH | Pulmonal Arteriel Hypertension | In Danish = HTP | Hipertensión Pulmonar | In Galician = ԹՀ | Թոքային հիպերտենզիա | In Armenian = PAH | Pulmonal Arteriell Hypertensjon | In Norwegian = PH | Plućna Hipertenzija | In Serbian = PAH | Pulmonell Arteriell Hypertension | In Swedish = PH | Pulmoner Hipertansiyon | In Turkish | In Catalan | → Blood and circulatory system → Cardiology → Chest diseases | 
| HAPhG | Heidelberger Abhandlungen zur Philosophie und ihrer Geschichte | In German | → Serial publications, periodicals → Philosophy, psychology → History | 
| HAPIN | (Stichting) Hulp Aan Papua's In Nood | In Dutch | → Foundations → Development | 
| 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 |