From The Collaborative International Dictionary of English v.0.48 [gcide]:
Calx \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}.]
[1913 Webster]
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.
[1913 Webster]
Note: Metallic calxes are now called oxides.
[1913 Webster]
2. Broken and refuse glass, returned to the post.
From WordNet (r) 3.0 (2006) [wn]:
calx
n 1: a white crystalline oxide used in the production of calcium
hydroxide [syn: {calcium oxide}, {quicklime}, {lime},
{calx}, {calcined lime}, {fluxing lime}, {unslaked lime},
{burnt lime}]
From Latin-English FreeDict Dictionary ver. 0.1.1 [fd-lat-eng]:
calx
1. hoof
2. heel
3. lime
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