Definitions of H2O

n binary compound that occurs at room temperature as a clear colorless odorless tasteless liquid; freezes into ice below 0 degrees centigrade and boils above 100 degrees centigrade; widely used as a solvent

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tap water
water directly from the spigot
bath water
water used for a bath
water in which dishes and cooking utensils are washed
distilled water
water that has been purified by distillation
holy water
water that has been blessed by a priest for use in symbolic purification
ground water, spring water, well water
underground water that is held in the soil and in pervious rocks
hard water
water that contains mineral salts (as calcium and magnesium ions) that limit the formation of lather with soap
solution of calcium hydroxide in water used as an antacid
melted snow or ice
brine, saltwater, seawater
water containing salts
fresh water, freshwater
water that is not salty
partially melted snow
soft water
water that is not hard (does not contain mineral salts that interfere with the formation of lather with soap)
bilge, bilge water
water accumulated in the bilge of a ship
water of crystallisation, water of crystallization, water of hydration
the water present in hydrated compounds
red tide
seawater that is discolored by large numbers of certain dinoflagellates that produce saxitoxin
rain, rainwater
drops of fresh water that fall as precipitation from clouds
a product of condensation
Type of:
binary compound
chemical compound composed of only two elements
fluid matter having no fixed shape but a fixed volume

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