The development of rust on a surface.

present participle of rust

plural of rusting

(intransitive) To oxidize, especially of iron or steel. / (transitive) To cause to oxidize. / (intransitive) To be affected with the parasitic fungus called rust.

The deteriorated state of iron or steel as a result of moisture and oxidation. / A similar substance based on another metal (usually with qualification, such as "copper rust"). / A reddish-brown color.

Corroded; having been oxidized or covered in rust.

simple past tense and past participle of rust

Third-person singular simple present indicative form of rust

plural of rust

(archaic) Full of rust; resembling or causing rust; rusty. / (archaic, figuratively) Dull; impaired by inactivity.