(Ireland) Health Service Executive

Initialism of health, safety, environment. / Initialism of high school equivalency. / Initialism of human systems engineering.

A city in northern Taiwan, sixth largest city in Taiwan, southwest of Taipei. / A county in northern Taiwan.

(UK, rail transport) Initialism of High Speed 1, a high-speed railway between London and the Channel Tunnel.

Initialism of His/Her Serene Highness, the title of a number of members of the royal family in various countries.

(mineralogy) An isometric-tetartoidal white mineral containing beryllium, calcium, fluorine, lithium, oxygen, and silicon.

(computing) Initialism of High Sierra Format, the early logical file system used for CD-ROMs. / (military, nautical, historical) Initialism of High Seas Fleet.

(computing) Initialism of heat sink and fan. / (nautical) Initialism of high speed ferry. / (nautical) Initialism of high speed freighter.

(aeronautics, NASA, meteorology) Initialism of Hurricane and Severe Storm Sentinel. (A project launched in August 2012 to observer hurricanes)

(Hong Kong, Singapore) Abbreviation of house.