HMD

== Translingual == === Symbol === HMD (international standards) ISO 3166-1 alpha-3 country code for Heard Island and McDonald Islands. Synonym: HM (alpha-2) == English == === Noun === HMD (countable and uncountable, plural HMDs) (countable, technology) Initialism of head-mounted display. (uncountable) Initialism of hoof-and-mouth disease.