from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. the common name for cupric sulphate, CuSO4, which forms blue crystals and is used in agriculture, dyeing, electroplating and many other applications; reducing agents reduce it to the red cuprous sulphate
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a copper salt made by the action of sulfuric acid on copper oxide
Sorry, no etymologies found.
The train of thought led by imperceptible, but perfectly natural, steps to the idea of insect poisons, his own original job in the territory, and the stock of copper sulphate and arsenate of lead which was stored at the river mouth port, for use the following spring.
Blue vitriol is copper sulphate pentahydrate, CuSO4.