cal·ci·um 
/ˈkælsijəm/ noun
/ˈkælsijəm/ noun [noncount] : a substance that is found in most plants and animals and that is especially important in people for strong healthy bones
▪ Her doctor said she should eat more foods that are high in calcium, such as milk and cheese.
▪ Her doctor said she should eat more foods that are high in calcium, such as milk and cheese.
