calx

American  

[kalks] / kælks /

noun

plural

calxes, calces

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

2. lime.

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calx British  

/ kælks /

noun

1. the powdery metallic oxide formed when an ore or mineral is roasted

2. another name for calcium oxide

3. anatomy the heel

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Etymology

Origin of calx

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

Example Sentences

The calx of acid is used in a variety of the arts, especially in the manufactory of glass.

From Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry by Priestley, Joseph

In answer to this it is said, that the pure air expelled from the calx uniting with the inflammable air in the vessel, recomposes the water found after this process.

From Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry by Priestley, Joseph

To make glass perfectly colourless, and at the same time more dense, commonly called flint glass, manufacturers use a certain proportion of calx of lead and manganese.

From Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry by Priestley, Joseph

When the calx of arsenic is distilled with sulphur, the vitriolic acid flies off, and a substance of a yellow colour, called orpiment, is produced.

From Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry by Priestley, Joseph

With more heat it ignites, and burns with a slight blue flame, while a yellowish calx, called flowers of bismuth, is produced.

From Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry by Priestley, Joseph