- 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
Examples from the Web for rustproof
It is rustproof and is not attacked by sulfuric, nitric or acetic acid, hot or cold, diluted or concentrated.Creative Chemistry</p>
Edwin E. Slosson
Covered with rustproof paint (or galvanized) it will last a life time.
- 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