Hanford Occupational Medical system (SAUS)
Heartless Old Man - Alternative sobriquet for William Gladstone, 1809-98, British statesman and prime minister, who was known to admirers as GOM, which see
Hectometric Emissions - Radio astronomy
Hexamethylmelamine, Oncovin - Vincristine, Methotrexate - Antineoplastic drug regimen (DAVI)
Higher Order Mismatch (SAUS)
Higher Order Mode (SAUS)
High-Order Multiplier (IAA)
High Osmolar Medium (STED)
Holland, MI - Amtrak rail station code
Homa - Language code (ETLW)
Hombre (automobile) - NCIC car model code
Homburg - Saar - German license plate city code
Home - Telegraphy (PCTE)
Home Crafted Products, Jacksonville, FL - Manufacturer code for watercraft hull identification number (USCG)
Homer - Alaska - Airport symbol (OAG)
Homer - Alaska - Seismograph station code, US Geological Survey (SEIS)
Homer - Greek poet, c. 800BC - Classical studies (ROG)
Homily (ROG)
Homing
Hoskins Manufacturing Co. (SAUO)
Hotine Oblique Mercator (SAUS)
Homerton College (SAUO)
Homiletics - A publication (SAUS)
Homobonus de Cremona - Deceased, 1272 - Authority cited in pre-1607 legal work (DSA)
Homoptera - Entomology
hominy (SAUS)
homonym (SAUS)