- the process of making metal rustproof.
- Also called rust·proof·er. a substance used in this process.
Origin of rustproofing
- not subject to rusting.
- to coat with a substance that prevents rusting.
Origin of rustproof
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- treated against rusting
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