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calcium

cal·ci·um

calcium

 
pronunciation:
kael si m
features:
Word Combinations (noun), Word Explorer
part of speech: noun
definition 1: a chemical element of the alkaline-earth group that has twenty protons in each nucleus and occurs widely in nature, but only in compounds such as calcite or limestone. (symbol: Ca)
definition 2: a dietary supplement containing compounds of calcium that can be absorbed in digestion.
Many women take calcium to prevent bone disease.
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  element, milk, skeleton, tooth, vegetable