| 单词 |
realgar |
| 释义 |
realgar|riːˈælgə(r)|
Also 8 realgal.
[a. med.L. realgar, ultimately from Arab. rehj al-ghār ‘powder of the cave’: cf. Sp. rejalgar, F. réalgar (earlier realgal, reagal, riagal), It. realgale, and see resalgar.]
The native or factitious disulphide of arsenic (1 b), also called red(sulphide or sulphuret of) arsenic and red orpiment, used as a pigment and in pyrotechnics.
c1400Lanfranc's Cirurg. 230 Þou schalt in no maner leie þerto realgar, ne noon violent þingis. 1543Traheron Vigo's Chirurg., Interpr. Strange Wordes s.v., Realgar is made of brymstone, vnsleked lyme, and orpigment. It kylleth rattes. 1685Boyle Salubr. Air 75 Divers native Orpimental Minerals, to say nothing of Realgar because it is a factitious combination of Orpiment and Sulphur. 1698Phil. Trans. XX. 199 A Medicine made of red Arsenick, or Realgar Powdered. 1771Woulfe ibid. LXI. 126 Arsenic forms a reddish mass like realgar. 1812Sir H. Davy Chem. Philos. 457 Sulphur and arsenic readily unite by fusion, and form a red vitreous semitransparent mass. The same substance is found native in different parts of Europe, and is called realgar. 1876Harley Mat. Med. (ed. 6) 298 Realgar of Arsenic was in ancient times employed in Medicines, and still is in India. |
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