Main Entry: ce·dar–ap·ple rust

Pronunciation: \ˈsē-dər-ˈa-pəl-\

Function: noun

Date: 1946

: 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