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noun, often attributive cal·ci·um \ˈkal-sē-əm\

Simple Definition of calcium

  • : a substance that is found in most plants and animals and that is especially important in people for strong healthy bones

Source: Merriam-Webster's Learner's Dictionary

Full Definition of calcium

  1. :  a silver-white divalent metallic element of the alkaline-earth group occurring only in combination — see element table

Examples of calcium in a sentence

  1. Her doctor said she should eat more foods that are high in calcium, such as milk and cheese.

Origin and Etymology of calcium

New Latin, from Latin calc-, calx lime

First Known Use: 1808

Other Chemical Engineering Terms

CALCIUM Defined for Kids


noun cal·ci·um \ˈkal-sē-əm\

Definition of calcium for Students

  1. :  a silvery soft metallic chemical element that is essential for strong healthy bones

Medical Dictionary


noun , often attributive cal·ci·um \ˈkal-sē-əm\

Medical Definition of calcium

  1. :  a silver-white bivalent metallic element that is an alkaline earth metal, occurs only in combination, and is an essential constituent of most plants and animals—symbol Ca; see element table

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