Definition of calcium in English:



mass noun
  • The chemical element of atomic number 20, a soft grey metal.

    • ‘Children who have poor diets and lack sufficient calcium and iron are hurt the most.’
    • ‘There may be some doubt now about the safety of oestrogen but there is no doubt about the safety of calcium.’
    • ‘Having enough calcium in your diet when you are young is important in minimising the risk, especially for women, of osteoporosis.’
    • ‘If the hen doesn't have enough calcium, the eggs may be soft shelled and egg binding is more likely.’
    • ‘Among natural foods rich in calcium, dairy milk is second only to maternal milk.’
    • ‘Because vegetarians eat less protein, they need less calcium to provide the same ratio.’
    • ‘You should aim to get 700 mg of calcium each day, which is roughly the same as a pint of milk or two small yoghurts.’
    • ‘These active regions often require the presence of a metal ion such as calcium, zinc or iron.’
    • ‘Children need calcium to build bones, and a little fat for energy.’
    • ‘Dairy products are not the best source of calcium as they cause calcium losses at the same time as providing calcium.’
    • ‘A dietary factor that increases the loss of calcium from the body is refined sugar.’
    • ‘Strontium is an element similar to calcium, and follows calcium into teeth and bones.’
    • ‘The bones don't just keep us standing, they're a reservoir of calcium for the rest of the body.’
    • ‘Most of us were brought up on a diet that included dairy products as an essential source of calcium.’
    • ‘The shells are made from calcium carbonate, a compound of calcium, carbon, and oxygen.’
    • ‘By living off calcium and vegetables, it doesn't surprise me that women stay so thin.’
    • ‘If blue hydrangeas are wanted, avoid using fertilisers that are high in calcium.’
    • ‘Some fruit is rich in mineral elements such as calcium, iron and magnesium.’
    • ‘If you tend to be susceptible to cramps, try eating more foods that are high in potassium and calcium.’
    • ‘Broccoli and almonds are chock full of calcium, but this does not seem to be common knowledge.’


Early 19th century: from Latin calx, calc- ‘lime’ (see calx) + -ium.