metallicize

\\məˈtaləˌsīz\ transitive verb (-ed/-ing/-s)

: to make (as a telephone line) fully metallic by adding another wire in place of a ground return

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/meuh tal"euh suyz'/, v.t., metallicized, metallicizing.

Elect. to make (a circuit) thoroughly metallic, as by replacing a ground return with another wire.

Also, esp. Brit., metallicise.

[METALLIC + -IZE]