• British National Vegetation Classification
• Halloween H20: 20 Years Later
  Halloween H20: 20 Years Later
  Halloween H20: Twenty Years Later is a 1998 slasher film and is the seventh installment in the Halloween film series. It is directed by Steve Miner and starring Jamie Lee Curtis, Josh Hartnett, and Michelle Williams. The screenplay, based on a story by Kevin Williamson further developed by Robert...
  
  (spelled with a zero), the seventh film in the Halloween series
• HMS H20
  HMS H20
  Fresia was an H class submarine of the Chilean Navy. The vessel was originally ordered by the United Kingdom's Royal Navy as HMS H20, but was handed over to Chile in 1917 as H6.- Career :...
  
  , a World War I British Royal Navy H class submarine
• Nissan H20, an engine
• XH-20 Little Henry, an experimental American helicopter of the 1940s

• Iridocyclitis
  Iridocyclitis
  Iridocyclitis, a type of anterior uveitis, is a condition in which the uvea of the eye is inflamed.Iridocyclitis isInflammation of the iris and the ciliary body.- Symptoms :Symptoms include:* Photophobia* Redness* Watering of the eyes* Lacrimation...
  
   ICD-10 code

See also

• H₂O (disambiguation)
  H2O (disambiguation)
  H2O is the chemical formula for water and is also used as an abbreviation for the word "water". H2O or H2O It may also refer to:* H2O , a punk band**H2O , their self-titled debut album...
  
  , the molecular formula for water used in a number of items