Definition of "cathodic" [ca•thod•ic]

• Proceeding from a nerve centre; efferent (adjective)
• Of or pertaining to a cathode (adjective)

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• "They're also protected from corrosion and tested regularly using a specialized process known as cathodic protection, he said."
• "The system, called cathodic protection, keeps rust from forming and corroding the metal walls."
• "Seems the electrical field from the lines penetrates past the six feet of earth protecting the pipelines and accelerates the cathodic erosion of the steel pipelines."