- copper-colored; metallic reddish-brown.
- consisting of or containing copper; copperlike.
Origin of cupreous
Examples from the Web for cupreous
Historical Examples of 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
Word Origin for cupreous
1660s, from Late Latin cupreus "of copper," from cuprum, alternative form of cyprum "copper" (see copper (n.1)). Related: Cupric (1799).