Akademik

apple rust

noun

rust fungus causing rust spots on apples and pears etc

• Syn: ↑cedar-apple rust, ↑Gymnosporangium juniperi-virginianae

• Hypernyms: ↑rust, ↑rust fungus

• Member Holonyms: ↑Gymnosporangium, ↑genus Gymnosporangium

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noun

1. : any of several diseases caused by fungi of the genus Gymnosporangium; especially : a destructive fungous disease especially of the apple but also attacking pears and quinces that is caused by a rust (G. juniperi-virginianae) having its pycnial and aecial stages on the leaves and fruit of the apple and the telial stage on species of Juniperus, especially a common red cedar (J. virginiana)

2. : the fungus causing apple rust — called also cedar apple rust, cedar rust; compare cedar apple

Useful english dictionary. 2012.