Noun: apple rust a-pul rúst
- Rust fungus causing rust spots on apples and pears etc.
"Cedar-apple rust affected many trees in the orchard";
- cedar-apple rust, Gymnosporangium juniperi-virginianae
Derived forms: apple rusts
Type of: rust, rust fungus
Part of: genus Gymnosporangium, Gymnosporangium
Encyclopedia: Apple rust