Calx (?), n.; pl. E. Calxes (#), L. Calces (#). [L. Calx, calcis. limestone; cf. Gr. gravel. , , pebble, Skr. gravel, Ir. carraic rock Gael. carraig, W. careg, stone. Cf. Chalk.]
1. Chem. (a)
Quicklime.
[Obs.] (b)
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.
Metallic calxes are now called oxides.
2.
Broken and refuse glass, returned to the post.
© Webster 1913.