IPA: /ˌmʌl.tɪˈmɛt.əl.ɪk/
KK: /mʌltɪˈmɛtəlɪk/
Relating to or made from more than one type of metal.
The artist used a multimetallic approach to create a unique sculpture.
Multimetallic → It is formed from "multi-" (meaning many) and "metallic" (from Latin "metallum", meaning metal). The word describes something that is composed of many metals or has the characteristics of multiple metals.
Think of 'many' ('multi-') types of 'metal' — that's why multimetallic refers to something made of many metals.