English > hydroxide: 2 senses > noun 1, substance| Meaning | A compound of an oxide with water. |
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| Synonym | hydrated oxide |
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| Narrower | aluminum hydroxide, aluminium hydroxide, hydrated aluminum oxide, hydrated aluminium oxide | white crystalline compound that occurs naturally as the mineral gibbsite |
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| calcium hydroxide, lime, slaked lime, hydrated lime, calcium hydrate, caustic lime, lime hydrate | A caustic substance produced by heating limestone |
| magnesium hydroxide | A white crystalline powder used chiefly in medicines |
| potash, caustic potash, potassium hydroxide | A potassium compound often used in agriculture and industry |
| sodium hydroxide, caustic soda | A strongly alkaline caustic used in manufacturing soap and paper and aluminum and various sodium compounds |
| Broader | compound, chemical compound | (chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight |
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| Spanish | hidróxido, óxido hidratado |
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| Catalan | hidròxid |
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