METALLIC definition: 1. A metallic sound, appearance, or taste is like metal: 2. consisting of, or partly consisting…. Learn more. A metal in chemistry is an element that creates positive ions (cations) readily and has metallic bonds. Metals are sometimes represented by a cloud of delocalized electrons and a lattice of positive ions. Learn the meaning and usage of the adjective metallic , which describes something related to metal or having a metal-like quality. Find synonyms, pronunciation, collocations, and examples of metallic in sentences. The Official Metallica YouTube Channel