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| Ca | |||
| calcium A malleable silvery-white metallic element of the alkaline hearth group; the fifth most abundant element in the earth crust, occurring especially as forms of calcium carbonate. It is an essential constituent of bones and teeth and is used as a deoxidizer in steel | |||
| calcium (Ca) | |||
| calcium | |||
| calcium: 698 phrases, 32 sujets |