1. pertaining to a monetary system based on two metals - in a bimetallistic system both gold and silver can constitute legal tender • Syn: bimetallistic • Pertains to noun: bimetallism, bimetallism (for: bimetallistic) • Derivationally related forms: bimetallism (for: bimetallistic) 2. formed of two different metals or alloys; especially in sheets bonded together • Syn: bimetal • Similar to: metallic, metal • Derivationally related forms: bimetal, bimetal (for: bimetal)