HMD explained

HMD may refer to:

Biology, medicine, chemistry

5,10-Methenyltetrahydromethanopterin hydrogenase, an enzyme found in methanogenic archea
Heavy metal detoxification, the removal of metallic toxic substances from the body
Hexamethylenediamine, an organic compound

Hepatic microvascular dysplasia, a disorder where mixing of venous blood and arterial blood in the liver occurs at the microscopic level
Hereditary mucoepithelial dysplasia, a rare autosomal dominant multiepithelial disorder
Hoof and mouth disease, an infectious viral disease that affects cloven-hoofed animals
Hyaline membrane disease, now called infant respiratory distress syndrome
Human Mortality Database, a joint initiative of the University of California, Berkeley, US and the MPI for Demographic Research in Rostock, Germany

Heard Island and McDonald Islands (ISO 3166 region code HMD), Antarctic islands of Australia

Hammond station (Louisiana) (station code HMD), a train station in Louisiana, US
Hampden Park railway station (station code HMD), a railway station in Sussex, England, UK

HMD Global, a Finnish technology company
HMD Motorsports, an American racing team
Hazira Manufacturing Division, Surat, Hazira, Gujarat, India; a manufactory of Reliance Industries Limited
Hospital for Mental Diseases, Shahdara, Delhi, India; predecessor to Institute of Human Behaviour and Allied Sciences
HD Hyundai Mipo, a South Korea shipbuilding company
Hyundai Motor Distributors, predecessor to Hyundai Automotive South Africa
Charlie Hammonds Flying Service (ICAO airline code HMD), a U.S. airline; see List of airline codes (C)

Head-mounted display, a display device, worn on the head or as part of a helmet
- Helmet-mounted display, for aviation applications