Definitions for CALXkælks; ˈkæl siz
Random House Webster's College Dictionary
calxkælks; ˈkæl siz(n.)(pl.)calx•es, cal•ces
the oxide or ashy substance that remains after metals, minerals, etc., have been thoroughly burned.
Origin of calx:
1350–1400; ME cals < OF < L calx lime; see calcium
calcium oxide, quicklime, lime, calx, calcined lime, fluxing lime, unslaked lime, burnt lime(noun)
a white crystalline oxide used in the production of calcium hydroxide
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.
(Now recognised as being) the oxide left after calcination of a metal.
Origin: From calx.
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
broken and refuse glass, returned to the post
Calx is a residual substance, sometimes in the form of a fine powder, that is left when a metal or mineral combusts or is calcinated due to heat. Calx, especially of a metal, is now known as an oxide. According to the obsolete phlogiston theory, the calx was the true elemental substance, having lost its phlogiston in the process of combustion. "Calx" is also sometimes used in older texts on artist's techniques to mean calcium oxide.
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