noun
- plural of rust; reddish-brown substances formed when iron or steel corrodes
- plural of rust; plant diseases caused by fungi that produce reddish-brown spots
Usage: botanical
verb
- third person singular present of rust; becomes corroded or causes to become corroded
Examples
- The old car rusts quickly in the salty air near the ocean.
- Different types of rusts can damage wheat crops.
- Iron rusts when exposed to moisture and oxygen.
- The gardener treated the roses for leaf rusts.
- Metal rusts faster in humid climates.
- She studies plant rusts at the agricultural research center.
- The bridge rusts despite regular maintenance.