Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

calcium

play
noun 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

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

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



Origin of calcium

New Latin, from Latin calc-, calx lime


First Known Use: 1808

Other Chemical Engineering Terms


CALCIUM Defined for Kids

calcium

play
noun cal·ci·um \ˈkal-sē-əm\

Definition of calcium

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




Medical Dictionary

calcium

play
noun 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





Seen and Heard

What made you want to look up calcium? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

February 11, 2016

the holder of an office

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image33683556

How much does a batman (the Turkish unit of measurement) weigh?

16.96 pounds 100 pounds 196.5 pounds 2.2 pounds
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ