n (General Engineering) metal supplied in the form of a welding rod, sometimes flux coated, melted by an arc or a flame into a joint between components to be joined
filler metal
filler metal
[′fil·ər ‚med·əl] (computer science) filler
filler metal
Metal which is added during a weld; has a melting point either approximately the same as or below that of the metals being welded.