English > H2O: 1 sense > noun 1, substance| Meaning | binary compound that occurs at room temperature as a clear colorless odorless tasteless liquid / liquid; freezes / freezes into ice below 0 degrees centigrade and boils above 100 degrees centigrade; widely used as a solvent. |
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| Synonym | water |
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| Narrower | bath water | water used for a bath |
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| bilge, bilge water | water accumulated in the bilge of a ship |
| dishwater | water in which dishes and cooking utensils are washed |
| distilled water | water that has been purified by distillation |
| fresh water, freshwater | water that is not salty |
| 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 |
| holy water | water that has been blessed by a priest for use in symbolic purification |
| limewater | solution of calcium hydroxide in water used as an antacid |
| meltwater | melted snow or ice |
| seawater, saltwater, brine | water containing salts |
| slush | partially melted snow |
| soft water | water that is not hard (does not contain mineral salts that interfere with the formation of lather with soap) |
| tap water | water directly from the spigot |
| water of crystallization, water of crystallisation, water of hydration | The water present in hydrated compounds |
| Broader | binary compound | chemical compound composed of only two elements |
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| liquid | fluid matter having no fixed shape but a fixed volume |
| Substance of | body of water, water | The part of the earth's surface covered with water (such as a river or lake or ocean) |
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| ice, water ice | water frozen / frozen in the solid state |
| ice crystal, snow mist, diamond dust, poudrin, ice needle, frost snow, frost mist | small crystals of ice |
| perspiration, sweat, sudor | salty fluid secreted by sweat glands |
| snowflake, flake | A crystal of snow |
| tear, teardrop | A drop of the clear salty saline solution secreted by the lacrimal glands |
| Substances | hydrogen, H, atomic number 1 | A nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas |
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| oxygen, O, atomic number 8 | A nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas |
| Spanish | agua, H2O |
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| Catalan | aigua, H2O |
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