title: HS
text: # HS
  
  HS or Hs can stand for:
  
  ## Businesses and brands
  
  * HS Produkt, a Croatian firearms manufacturer
  * Helsingin Sanomat, a newspaper in Finland
  * Hawker Siddeley, aircraft manufacturing group
  * Henschel & Son, in aircraft prefixes; e.g., Hs 117
  * Head & Shoulders or H&S, a shampoo brand
  * Harris Scarfe and HS Home, a chain of Australian department stores
  
  ## Science and technology
  
  ### Chemistry
  
  * Hassium, symbol Hs, a chemical element
  * Bisulfide, $HS^−,$ a chemical compound derived from $H_2S$
  * Mercapto radical, $HS^•,$ a radical molecule
  * Hun stuff (a World War I name for mustard gas)
  
  ### Medicine
  
  * hs, medical abbreviation for "hours of sleep"
  * h.s., medical abbreviation for the Latin phrase hora somni ("at bedtime")
  * Hereditary spherocytosis, a genetic disorder marked by hemolytic anemia
  * Hidradenitis suppurativa, a skin condition affecting apocrine sweat glands and hair follicles
  
  ### Other uses in science and technology
  
  * '.hs', the Haskell programming language's typical filename extension
  * Heat sink
  * Higman–Sims group, in mathematics
  * Hypothetical syllogism, a proof rule in classical logic
  * Horizon scanning, a method from futures studies
  
  ## Vehicles
  
  * Curtiss HS, an American patrol flying boat
  * Lexus HS, a Japanese compact hybrid sedan
  * MG HS, a Chinese-British compact SUV
  * YTHS HS, a Chinese unmanned aerial vehicle series
  
  ## Other uses
  
  * Harlem Spartans, a British hip hop collective
  * Harmonized System, the Harmonized Commodity Description and Coding System of tariff nomenclature
  * Sestertius, an ancient Roman coin
  * High school (secondary education)
  * Solar Hijri calendar (= Hijri Shamsi)
  * Holy Spirit
  * HS postcode area, covering the Outer Hebrides, Scotland
  * SS-Heimatschutz Slowakei (HS), a German paramilitary group in Slovakia during World War II
  * Thailand (aircraft registration prefix HS)
  