old name for mercurous chloride, 1670s, from French calomel, supposedly (Littré) from Greek kalos "fair" (see Callisto) + melas "black;" but as the powder is yellowish-white this seems difficult. "It is perhaps of significance that the salt is blackened by ammonia and alkalis" [Flood].
雙語例句
1. The calomel electrode has a small pinhole opening or wick.
甘汞電板上有一個針孔或砂芯.
來自辭典例句
2. We have the saturated calomel electrode.
我們得到飽和甘汞電極.
來自辭典例句
3. Already the hospitals were worrying about the scarcity of quinine, calomel, opium, chloroform and iodine.