Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun The crumbly residue left after a mineral or metal has been calcined or roasted.

from The Century Dictionary.

  • noun Lime or chalk.
  • noun The ashy substance which remains after metals, minerals, etc., have been calcined. Metallic calxes are now generally called oxids.
  • noun Broken and refuse glass, which is restored to the pots.
  • noun In anatomy, the heel: commonly used in the Latin genitive (calcis), as in os calcis, the heel-bone or calcaneum.

from the GNU version of the Collaborative International Dictionary of English.

  • noun obsolete Quicklime.
  • noun The substance which remains when a metal or mineral has been subjected to calcination or combustion by heat, and which is, or may be, reduced to a fine powder.
  • noun Broken and refuse glass, returned to the post.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun archaic The substance which remains after a metal or mineral has been thoroughly burnt, seen as being the essential substance left after the expulsion of phlogiston.
  • noun the oxide left after calcination of a metal.
  • noun calcium oxide

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a white crystalline oxide used in the production of calcium hydroxide

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[Middle English, from Latin, lime, limestone, pebble, from Greek khalix, pebble.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Latin calx ("lime").

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