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oak wilt
noun
, Plant Pathology.
- a disease of oaks, characterized by wilting and discoloration of the leaves and defoliation, usually starting at and spreading from the top of the tree and the ends of the branches, caused by a fungus, Chalara quercina.
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Word History and Origins
Origin of oak wilt1
An Americanism dating back to 1940–45
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[tawr-choo-uhs ]
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