The chemical element of atomic number 20, a soft grey metal. (Symbol: Ca)
More example sentences
- These active regions often require the presence of a metal ion such as calcium, zinc or iron.
- Strontium is an element similar to calcium, and follows calcium into teeth and bones.
- If you tend to be susceptible to cramps, try eating more foods that are high in potassium and calcium.
Definition of calcium in:
- The US English dictionary