- the oxide or ashy substance that remains after metals, minerals, etc., have been thoroughly roasted or burned.
- lime1(def 1).
Origin of calx
1350–1400; late Middle English < Latin: lime; replacing Middle English cals < Old French < Latin
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for calx
He thought they were "compounded" of a certain earth, or calx, and phlogiston.Priestley in America
Edgar F. Smith
It was mentioned by Libavius, who named it calx plumb dulcis.
Calx antimonii, L. Sometimes applied to antimony-ash, but more commonly to crude, unwashed diaphoretic antimony.
It was observed very early, that when a metal was converted into a calx, its weight was increased.The Life of Sir Humphrey Davy, Bart. LL.D., Volume 2 (of 2)
John Ayrton Paris
Heat recovers the pure air, and the mercury, leaving the calx of the impure metal.
- the powdery metallic oxide formed when an ore or mineral is roasted
- another name for calcium oxide
- anatomy the heel
C15: from Latin: lime, from Greek khalix pebble
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
- The crumbly residue left after a mineral or metal has been calcined or roasted.
- The posterior rounded extremity of the foot; the heel.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.