cedar-apple rust

noun ce·dar-ap·ple rust \ ˈsē-dər-ˈa-pəl- \
|Updated on: 30 May 2018

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

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First Known Use of cedar-apple rust

1946

in the meaning defined above

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