Definition of copperas in English:
Green crystals of hydrated ferrous sulphate, especially as an industrial product.
- These knobbly, metallic-looking fossils were turned into a mixture of dilute sulphuric acid and dissolved copperas using a dangerous, complicated and highly noxious industrial process.
- An inventory of Okeman's works near Poole in Dorset, dated November 1583, records 55 hogsheads of copperas, along with the equipment for manufacturing alum and copperas.
- Removal of large amounts of ordinary cave sediment may indicate saltpeter or fertilizer mining, while gypsum, copperas, alum, or Epsom salt are usually indicated by crystalline or powdered white, yellow, or green deposits.
Definition of copperas in:
- US English dictionary
What do you find interesting about this word or phrase?
Comments that don't adhere to our Community Guidelines may be moderated or removed.
Most popular in the US
Most popular in the UK
Most popular in Canada
Most popular in Australia
Most popular in Pakistan