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alkaline earthAn oxide of an alkaline earth metal, which produces an alkaline solution in reaction with water.
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alkaline earth<chemistry> Any of the metallic elements found in the second column of the periodic table, such as calcium and magnesium. (09 Oct 1997)
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alkaline earth
(chemistry) Any oxide of the elements of group II of the periodic table; they are not as basic as the alkalis, and not so soluble in water.
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