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calx

American

[kalks] / kælks /

noun

the oxide or ashy substance that remains after metals, minerals, etc., have been thoroughly roasted or burned.
lime.

calx British

/ kælks /

noun

the powdery metallic oxide formed when an ore or mineral is roasted
another name for calcium oxide
anatomy the heel

"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

Other Word Forms

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Etymology

Origin of calx

1350–1400; late Middle English < Latin: lime; replacing Middle English cals < Old French < Latin

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023