exocortis

noun

exo·cor·tis | \ ˌeksəˈkȯrtə̇s\

plural -es

Definition of exocortis

: a disease of oranges that is especially important in trees grafted on trifoliate stock, is characterized by peeling of the outer bark in narrow dry strips and by dwarfing of the tree, and is caused probably by either a virus or a genetic factor

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