Audio Help [kal-see-uh
m] Pronunciation Key | a silver-white divalent metal, occurring combined in limestone, chalk, gypsum, etc., occurring also in vertebrates and other animals, as a component of bone, skeletal mass, shell, etc., and as a necessary element in nerve conduction, heartbeat, muscle contraction, and many other physiological functions. Symbol: Ca; atomic weight: 40.08; atomic number: 20; specific gravity: 1.55 at 20°C. |
| Dictionary.com Unabridged (v 1.1) Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006. |
Calcium
To learn more about Calcium visit Britannica.com
| © 2008 Encyclopædia Britannica, Inc. |
| cal·ci·um
Audio Help (kāl'sē-əm) Pronunciation Key
n. Symbol Ca A silvery, moderately hard metallic element that constitutes approximately 3 percent of the earth's crust and is a basic component of most animals and plants. It occurs naturally in limestone, gypsum, and fluorite, and its compounds are used to make plaster, quicklime, Portland cement, and metallurgic and electronic materials. Atomic number 20; atomic weight 40.08; melting point 842 to 848°C; boiling point 1,487°C; specific gravity 1.55; valence 2. See Table at element. [Latin calx, calc-, lime; see calx + -ium.] |
| The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2006 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved. |
calcium
| Online Etymology Dictionary, © 2001 Douglas Harper |
| calcium | |
noun | |
| a white metallic element that burns with a brilliant light; the fifth most abundant element in the earth's crust; an important component of most plants and animals |
| WordNet® 3.0, © 2006 by Princeton University. |
calcium [ˈkӕlsiəm] noun
|
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Kernerman English Multilingual Dictionary, © 2000-2006 K Dictionaries Ltd. |
| calcium
Audio Help (kāl'sē-əm) Pronunciation Key
Symbol Ca A silvery-white, moderately hard metallic element of the alkaline-earth group that occurs in limestone and gypsum. It is a basic component of leaves, bones, teeth, and shells, and is essential for the normal growth and development of most animals and plants. Calcium is used to make plaster, cement, and alloys. Atomic number 20; atomic weight 40.08; melting point 842 to 848°C; boiling point 1,487°C; specific gravity 1.55; valence 2. See Periodic Table. |
| The American Heritage® Science Dictionary Copyright © 2002 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved. |
calcium cal·ci·um (kāl'sē-əm)
n.
Symbol Ca
A soft metallic element that is a basic component of animals and plants and constitutes [approx] 3 percent of Earth's crust. It occurs naturally in limestone, gypsum, and fluorite. Atomic number 20; atomic weight 40.08; melting point 842°C; boiling point 1,484°C; specific gravity 1.55; valence 2.
| The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. |
Main Entry: cal·ci·um
Pronunciation: 'kal-sE-&m
Function: noun
often attributive : a silver-white bivalent metallic element that isan alkaline earth metal, occurs only in combination, and is an essential constituent of most plants and animals —symbol Ca; —see
| Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc. |
Calcium, NY (CDP, FIPS 11671) Location: 44.03470 N, 75.84798 W
Population (1990): 2465 (894 housing units)
Area: 14.5 sq km (land), 0.0 sq km (water)
Zip code(s): 13616
| U.S. Gazetteer, U.S. Census Bureau |
Calcium
Cal"ci*um\ (k[a^]l"s[i^]*[u^]m), n. [NL., from L. calx, calcis, lime; cf F. calcium. See Calx.] (Chem.) An elementary substance; a metal which combined with oxygen forms lime. It is of a pale yellow color, tenacious, and malleable. It is a member of the alkaline earth group of elements. Atomic weight 40. Symbol Ca. Note: Calcium is widely and abundantly disseminated, as in its compounds calcium carbonate or limestone, calcium sulphate or gypsum, calcium fluoride or fluor spar, calcium phosphate or apatite. Calcium light, an intense light produced by the incandescence of a stick or ball of lime in the flame of a combination of oxygen and hydrogen gases, or of oxygen and coal gas; -- called also Drummond light.| Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc. |
calcium
calcium: in CancerWEB's On-line Medical Dictionary
| On-line Medical Dictionary, © 1997-98 Academic Medical Publishing & CancerWEB |
View results from: Dictionary | Thesaurus | Encyclopedia | All Reference | the Web
Perform a new search, or try your search for "Calcium" at:
- Amazon.com - Shop for books, music and more
- Reference.com - Encyclopedia Search
- Reference.com - Web Search powered by Ask.com
- Thesaurus.com - Search for synonyms and antonyms













