- a white, tasteless powder, Hg2Cl2, used chiefly as a purgative and fungicide.
Origin of calomel
Examples from the Web for calomel
Calomel and pills are the great panacea for all their bodily ills.
A grain of calomel and a grain of opium for ten successive nights.
And then one grain of calomel and one of opium every night for ten successive nights.
One grain of calomel and one of opium for ten successive nights.
Calomel three grains every third day, with infusion of senna.
- a colourless tasteless powder consisting chiefly of mercurous chloride, used medicinally, esp as a cathartic. Formula: Hg 2 Cl 2
Word Origin and History for calomel
old name for mercurous chloride, 1670s, from French calomel, supposedly (Littré) from Greek kalos "fair" + 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].
- A colorless, white or brown tasteless compound used as a purgative and an insecticide.mercurous chloride