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.

---

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

---

Etymology

Origin of calx

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

Example Sentences

By heat it is converted into a white calx.

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

The solution of fixed alkali dissolves the calx of arsenic, and by means of heat a brown tenacious mass is produced, and having also a disagreeable smell, it is called liver of arsenic.

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

The calx of iron, therefore, having the same effect with massicot, when treated in the same manner, appears to contain no more pure air than massicot does.

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

In fact, we seem fast coming to regard as sober truth the ancient adage, apparently so extravagant—Omnis calx e vermibus; omne ferrum e vermibus; omnis silex e vermibus.

From The Religion of Geology and Its Connected Sciences by Hitchcock, Edward

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