calcium

[ kal-see-uhm ]

/ ˈkæl si əm /

noun Chemistry, Biology.

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.

Origin of calcium

First recorded in 1800–10; calc- + -ium

Words nearby calcium

calciphylaxis, calciprivic, calcite, calcitonin, calcitriol, calcium, calcium antagonist, calcium arsenate, calcium blocker, calcium carbide, calcium carbonate

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for calcium

Fat-free or skim milkEveryone knows milk is an excellent source of calcium that will keep your bones in tip-top shape.
10 Ways to Stay Hydrated (That Aren’t Water)|DailyBurn|July 25, 2014|DAILY BEAST
The rhino beetle—fried, stewed, grilled, or roasted—is high in calcium and protein.
Cicadas, Grasshoppers, Locusts, Ants Among the Tastiest Insects|Nina Strochlic|May 14, 2013|DAILY BEAST
At night we drank a beverage we called “CalMag,” a terrible mixture of calcium, magnesium, vinegar, and water.
Scientology’s Sea Org: A Story of Escape for Katie Holmes and Suri Cruise|Abigail Pesta|July 6, 2012|DAILY BEAST
She tells us what happens when the balance is ripped apart by the release of calcium and magnesium into the atmosphere.
Chris Hedges and Joe Sacco Chronicle Mining Catastrophes in West Virginia|Chris Hedges, Joe Sacco|June 14, 2012|DAILY BEAST

And many are packed with nutrients like zinc, iron, and calcium.
Forget the Starbucks Backlash—We Should Be Eating More Bugs|Daniel Stone|April 24, 2012|DAILY BEAST
Waters containing compounds of calcium and magnesium in solution are called hard waters because they feel harsh to the touch.
An Elementary Study of Chemistry|William McPherson
In Fig. 12, why is it necessary to dry the hydrogen by means of the calcium chloride in the tube X?
An Elementary Study of Chemistry|William McPherson
Chemically, calcium hydroxide is a moderately strong base, though not so strong as sodium hydroxide.
An Elementary Study of Chemistry|William McPherson
(b) Show how the diet may be made to cover the need for additional iron, calcium and phosphorus.
Dietetics for Nurses|Fairfax T. Proudfit
The use of "cartridges" of calcium carbide has already been briefly referred to in Chapters II.
Acetylene, The Principles Of Its Generation And Use|F. H. Leeds

British Dictionary definitions for calcium

calcium

/ (ˈkælsɪəm) /

noun

a malleable silvery-white metallic element of the alkaline earth group; the fifth most abundant element in the earth's crust (3.6 per cent), occurring esp as forms of calcium carbonate. It is an essential constituent of bones and teeth and is used as a deoxidizer in steel. Symbol: Ca; atomic no: 20; atomic wt: 40.078; valency: 2; relative density: 1.55; melting pt: 842±2°C; boiling pt: 1494°C

Word Origin for calcium

C19: from New Latin, from Latin calx lime

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for calcium

calcium

[ kăl′sē-əm ]

n. Symbol Ca

A soft metallic element that is a basic component of animals and plants and constitutes approximately 3 percent of Earth's crust. It occurs naturally in limestone, gypsum, and fluorite. Atomic number 20.

Scientific definitions for calcium

calcium

[ kăl′sē-əm ]

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.

单词	calcium
释义	calcium [ kal-see-uhm ] / ˈkæl si əm / noun Chemistry, Biology. 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. Origin of calcium First recorded in 1800–10; calc- + -ium Words nearby calcium calciphylaxis, calciprivic, calcite, calcitonin, calcitriol, calcium, calcium antagonist, calcium arsenate, calcium blocker, calcium carbide, calcium carbonate Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for calcium Fat-free or skim milkEveryone knows milk is an excellent source of calcium that will keep your bones in tip-top shape. 10 Ways to Stay Hydrated (That Aren’t Water)\|DailyBurn\|July 25, 2014\|DAILY BEAST The rhino beetle—fried, stewed, grilled, or roasted—is high in calcium and protein. Cicadas, Grasshoppers, Locusts, Ants Among the Tastiest Insects\|Nina Strochlic\|May 14, 2013\|DAILY BEAST At night we drank a beverage we called “CalMag,” a terrible mixture of calcium, magnesium, vinegar, and water. Scientology’s Sea Org: A Story of Escape for Katie Holmes and Suri Cruise\|Abigail Pesta\|July 6, 2012\|DAILY BEAST She tells us what happens when the balance is ripped apart by the release of calcium and magnesium into the atmosphere. Chris Hedges and Joe Sacco Chronicle Mining Catastrophes in West Virginia\|Chris Hedges, Joe Sacco\|June 14, 2012\|DAILY BEAST And many are packed with nutrients like zinc, iron, and calcium. Forget the Starbucks Backlash—We Should Be Eating More Bugs\|Daniel Stone\|April 24, 2012\|DAILY BEAST Waters containing compounds of calcium and magnesium in solution are called hard waters because they feel harsh to the touch. An Elementary Study of Chemistry\|William McPherson In Fig. 12, why is it necessary to dry the hydrogen by means of the calcium chloride in the tube X? An Elementary Study of Chemistry\|William McPherson Chemically, calcium hydroxide is a moderately strong base, though not so strong as sodium hydroxide. An Elementary Study of Chemistry\|William McPherson (b) Show how the diet may be made to cover the need for additional iron, calcium and phosphorus. Dietetics for Nurses\|Fairfax T. Proudfit The use of "cartridges" of calcium carbide has already been briefly referred to in Chapters II. Acetylene, The Principles Of Its Generation And Use\|F. H. Leeds British Dictionary definitions for calcium calcium / (ˈkælsɪəm) / noun a malleable silvery-white metallic element of the alkaline earth group; the fifth most abundant element in the earth's crust (3.6 per cent), occurring esp as forms of calcium carbonate. It is an essential constituent of bones and teeth and is used as a deoxidizer in steel. Symbol: Ca; atomic no: 20; atomic wt: 40.078; valency: 2; relative density: 1.55; melting pt: 842±2°C; boiling pt: 1494°C Word Origin for calcium C19: from New Latin, from Latin calx lime Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Medical definitions for calcium calcium [ kăl′sē-əm ] n. Symbol Ca A soft metallic element that is a basic component of animals and plants and constitutes approximately 3 percent of Earth's crust. It occurs naturally in limestone, gypsum, and fluorite. Atomic number 20. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for calcium calcium [ kăl′sē-əm ] 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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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