n. 矿灰, 氧化钙(生)石灰

[医] 石灰, 氧化钙, 跟

[ noun ]
a white crystalline oxide used in the production of calcium hydroxide
<noun.substance>

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}.]
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.