corrosiondust
nounUK /kəˈrəʊʒən dʌst/
US /kəˈroʊʒən dʌst/
Tiny bits of rusty metal that fall off when metal gets old and worn.
The old bike left a trail of corrosiondust on the garage floor.
OTHER MEANINGS
2. Fine particles produced when a material slowly breaks down chemically.
Scientists collected corrosiondust from the weathered statue to study its decay.
3. A powdery residue found on old batteries or electrical contacts.
He wiped the corrosiondust off the battery terminals before installing new ones.
4. Figurative: lingering traces of something that has slowly decayed or fallen apart.
The abandoned factory was covered in the corrosiondust of forgotten industry.