Rustproof

Origin

rust + -proof

Full definition of rustproof

Adjective

1. Resistant to rust, oxidation and corrosion.This is supposed to be a rustproof trashcan, but it can't handle the salt they use on our roads.

Synonyms

• stainless

Verb

1. 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.