(comparative more rustproof, superlative most rustproof)
(third-person singular simple present rustproofs, present participle rustproofing, simple past and past participle rustproofed)
- To make resistant to rust, such as by applying a coating.
- We'll rustproof the metal with a good coat of paint and then we'll be able to leave it outdoors for years without damage.
rust +"Ž -proof