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词汇 calcium
释义

calcium

noun
/ˈkælsiəm/
/ˈkælsiəm/
[uncountable]
(symbol Ca)
  1. a chemical element. Calcium is a soft silver-white metal that is found in bones, teeth and chalk.Topics Physics and chemistryb2
    Collocations DictionaryCalcium is used before these nouns:
    • concentration
    • deficiency
    • deposit
    词源early 19th cent.: from Latin calx, calc- ‘lime’, probably from Greek khalix ‘pebble, limestone’ + -ium.
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