[kyoo-pree-uh s, koo-]
- copper-colored; metallic reddish-brown.
- consisting of or containing copper; copperlike.
Origin of cupreous
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for cupreous
The cupreous precipitate must be triturated with lime, after it is nearly dry, to bring out the fine velvety blue colour.
Copper was named after Venus, and cupreous salts were known as venereal salts.
These crystals are merely some of the cupreous salt forced over by the heat.
Finally they must be winced through dilute sulphuric acid to clear up the white, by removing the cupreous tinge.
- of, consisting of, containing, or resembling copper; coppery
- of the reddish-brown colour of copper
C17: from Late Latin cupreus, from cuprum copper 1
Word Origin and History for cupreous
1660s, from Late Latin cupreus "of copper," from cuprum, alternative form of cyprum "copper" (see copper (n.1)). Related: Cupric (1799).
Online Etymology Dictionary, © 2010 Douglas Harper