Water is a chemical compound with the chemical formula ''. A water molecule contains one oxygen and two hydrogen atoms connected by covalent bonds. Water is a liquid at standard ambient temperature and pressure, but it often co-exists on Earth with its solid state, ice, and gaseous state, steam . Water also exists in a liquid crystal state near hydrophilic surfaces.

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  1. A chemical, found at room temperature and pressure as a clear liquid, having the formula H₂O, required by all forms of life on Earth. From a linguistic point of view it can be argued that H₂O exists in three states; water is one of them and is by definition liquid. Frozen water is called ice (though there are other frozen compounds known as ice they are given specific descriptions; e.g. dry ice refers to frozen carbon dioxide.) Ice alone refers to frozen water. Water vapor has various names, none of which is water. One can request a glass of water and not expect to receive a glass of ice or container of water vapor.
    1. The liquid form of this chemical; liquid H₂O.
      1. A serving of water.
    2. Ancient philosophy.
    3. One of the four basic elements.
    4. One of the five basic elements (see ).
  2. Any body of water, or a specific part of it.
  3. A combination of water and other substance(s).
    1. Mineral water.
    2. Spa water.
    3. A solution in water of a gaseous or readily volatile substance.
    4. Urine.
      1. Amniotic fluid; used in the plural in the UK and in singular in North America.
    5. Fluids in the body, especially when causing swelling.
  4. A state of affairs; conditions; usually with an adjective indicating an adverse condition.
  5. A person's intuition.
  6. Excess valuation of securities.
  7. The limpidity and lustre of a precious stone, especially a diamond.
  8. A wavy, lustrous pattern or decoration such as is imparted to linen, silk, metals, etc.


  1. To pour water into the soil surrounding (plants).
  2. To wet or supply with water; to moisten; to overflow with water; to irrigate.
  3. To provide (animals) with water for drinking.
    I need to go water the cattle.
  4. To get or take in water.
    The ship put into port to water.
  5. To urinate onto.
    Nature called, so I stepped into the woods and watered a tree.
  6. To dilute.
    ''Can you water the whisky, please?
  7. To overvalue (securities), especially through deceptive accounting.
  8. To fill with or secrete water.
    Chopping onions makes my eyes water.
    The smell of fried onions makes my mouth water.
  9. To wet and calender, as cloth, so as to impart to it a lustrous appearance in wavy lines; to diversify with wavelike lines.
    to water silk

The above text is a snippet from Wiktionary: water
and as such is available under the Creative Commons Attribution/Share-Alike License.

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