The room looked as if it had been an experimental laboratory-if she was right in judging the purpose of the torn remnants she saw on the walls: a great many electrical outlets, bits of heavy cable, lead conduits, glass tubing, built-in cabinets without shelves or doors.
There are no more uses of "conduit" in the book.
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Building codes requires the wires be run in a conduit.
The Ukrainian pipeline became a conduit for 70% of Russian gas sales to Europe.