cedar-apple rust

noun ce·dar-ap·ple rust \ ˈsē-dər-ˈa-pəl- \

Definition of cedar-apple rust

: a gall-producing disease especially of the apple caused by a rust fungus (Gymnosporangium juniperi-virginianae) that completes the first part of its life cycle on the common red cedar (Juniperus virginiana) and the second on the leaves and fruit of the apple

First Known Use of cedar-apple rust

1946

in the meaning defined above

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