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cathodic protection

noun
  1. protection of ferrous metals against electrolysis by the attachment of sacrificial anodes.
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Origin of cathodic protection

First recorded in 1930–35
Also called electrolytic protection.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for cathodic protection

cathodic protection

noun
  1. metallurgy a technique for protecting metal structures, such as steel ships and pipelines, from electrolytic corrosion by making the structure the cathode in a cell, either by applying an electromotive force directly or by putting it into contact with a more electropositive metalSee also sacrificial anode
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012