Pronunciation : Calx, n.; pl. E. Calxes
Part of Speech : L.
Etymology : [L. Calx, calcis. limestone; cf. Gr. carraic rock Gael. carraig, W. careg, stone. Cf. Chalk.]
Definition : 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.
Note: Metallic calxes are now called oxides.
2. Broken and refuse glass, returned to the post.
Calces.
Source : Webster's Unabridged Dictionary, 1913