cupreous, a.
(ˈkjuːpriːəs)
[f. L. cupre-us of copper (f. cupr-um copper) + -ous.]
1. Of copper; of the nature of copper; consisting of or containing copper.
| 1666 Boyle Orig. Formes & Qual., A Cupreous Resin. 1693 Slare in Phil. Trans. XVII. 900 Such Particles as are of a Cupreous Nature. 1807 T. Thomson Chem. (ed. 3) II. 398 Boracic acid and cupreous salts tinge it green. 1857 Scoffern Useful Metals 530 Wicklow..has long been celebrated for its cupreous deposits. |
2. Resembling copper; copper-coloured.
| 1804 Phil. Trans. XCIV. 316 It is most frequently of the colour of bronze, passing to a pale cupreous-red. 1849 Thoreau Week Concord Riv. Saturday 32 This bright cupreous dolphin. |