a. [ Pref. bi- + metallic: cf. F. bimétallique. ] 1. Of or relating to, or using, a double metallic standard (as gold and silver) for a system of coins or currency. [ archaic ] [ 1913 Webster ]
2. Composed of two different metals; formed of two parts, each of a different metal; as, bimetallic wire; bimetallic thermometer, etc. [ Webster 1913 Suppl. ]