neogen

from The Century Dictionary.

• noun An alloy resembling silver, said to have the following composition: copper, 58 per cent.; zinc. 27; nickel, 12; tin, 2; aluminium, 0.5; and bismuth, 0.5.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Chem.) An alloy resembling silver, and consisting chiefly of copper, zinc, and nickel, with small proportions of tin, aluminium, and bismuth.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun chemistry, archaic An alloy resembling silver, consisting chiefly of copper, zinc, and nickel, with small proportions of tin, aluminium, and bismuth.