H2O

Thesaurus

Noun

1.

H2O - 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 solventwatertear, teardrop - a drop of the clear salty saline solution secreted by the lacrimal glands; "his story brought tears to her eyes"perspiration, sudor, sweat - salty fluid secreted by sweat glands; "sweat poured off his brow"tap water - water directly from the spigotbody of water, water - the part of the earth's surface covered with water (such as a river or lake or ocean); "they invaded our territorial waters"; "they were sitting by the water's edge"flake, snowflake - a crystal of snowdiamond dust, frost mist, frost snow, ice crystal, ice needle, poudrin, snow mist - small crystals of icebinary compound - chemical compound composed of only two elementsatomic number 1, H, hydrogen - a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universeatomic number 8, O, oxygen - a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crustbath water - water used for a bathdishwater - water in which dishes and cooking utensils are washeddistilled water - water that has been purified by distillationholy water - water that has been blessed by a priest for use in symbolic purificationground water, spring water, well water - underground water that is held in the soil and in pervious rockshard water - water that contains mineral salts (as calcium and magnesium ions) that limit the formation of lather with soapice, water ice - water frozen in the solid state; "Americans like ice in their drinks"limewater - solution of calcium hydroxide in water used as an antacidliquid - fluid matter having no fixed shape but a fixed volumemeltwater - melted snow or icebrine, saltwater, seawater - water containing salts; "the water in the ocean is all saltwater"fresh water, freshwater - water that is not saltyslush - partially melted snowsoft 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 shipwater of crystallisation, water of crystallization, water of hydration - the water present in hydrated compounds