o·ro·ide 
(ôrō-īd′) also o·re·ide (-ē-īd′)
(ôrō-īd′) also o·re·ide (-ē-īd′)n.
An alloy of copper, zinc, and tin, used in imitation gold jewelry.
[Alteration of French oréide : or, gold; see OR3 + -éide, resembling (from Greek -oeidēs, -oid).]