IPA: /ˈmɛtəld/
KK: /ˈmɛtld/
Made of metal or having metal parts, often used to describe surfaces that are covered with metal or have metal fittings.
The metalled road was smooth and easy to drive on.
To cover a surface with metal or to make something into metal.
The road was metalled to improve its durability and safety.
Past: metalled
Past Participle: metalled
Metalled is derived from "metal" (from Old French *metal*, meaning a substance that is typically hard, shiny, and conductive) and the suffix "-ed" (indicating a state or condition). The word "metalled" refers to something that has been covered or treated with metal.
Think of a surface that has been 'treated with metal' — that's what 'metalled' means.